London, UK – [Current Date] – The Ethereum ecosystem, a dynamic frontier of decentralized innovation, is once again abuzz with activity as its core developers navigate the intricate pathways of future network upgrades. Regular "Checkpoint" updates serve as crucial high-level briefings for the community, distilling the complex discussions held during the All Core Developer (ACD) calls into digestible insights. The latest installment reveals a landscape marked by both diligent progress and anticipated challenges, particularly concerning the upcoming Glamsterdam and Hegotá upgrades.

This update offers a comprehensive look into the current state of Ethereum’s development, highlighting the technical hurdles being overcome, the strategic decisions shaping the network’s future, and the collaborative spirit driving its evolution. From the foundational re-architecting of block production to the quest for enhanced user experience and future-proof security, the Ethereum community remains committed to a vision of a more scalable, secure, and decentralized blockchain.

Main Facts: A Glimpse into Ethereum’s Evolving Core

Ethereum’s development trajectory is currently defined by the intricate progress of the Glamsterdam upgrade and the foundational planning for Hegotá. Glamsterdam, while advancing steadily, is encountering significant complexities, primarily driven by the implementation of enshrined Proposer-Builder Separation (ePBS). This ambitious change, aimed at enhancing network decentralization and mitigating Maximal Extractable Value (MEV) concerns, necessitates a fundamental re-architecture of core protocol components, leading to a slower but methodical development pace. Alongside ePBS, Glamsterdam is set to introduce critical gas repricing mechanisms and an increase in the maximum contract size, responding to long-standing developer and ecosystem demands.

Looking ahead, the Hegotá upgrade has solidified its major consensus layer feature: FOCIL (EIP-7805), a proposal focused on improving fork choice stability. On the execution layer, while a specific Account Abstraction proposal (EIP-8141) did not achieve immediate headliner status due to implementation debates, the core developers have made a clear commitment to integrating Account Abstraction as a minor feature, emphasizing its importance for user experience. The process for community members to propose non-headlining EIPs for Hegotá is set to commence shortly, fostering broad participation in the network’s evolution. Furthermore, efforts to increase the network’s baseline gas limit are underway, promising greater transaction capacity and potentially lower fees in future upgrades.

Chronology: Charting the Path from Vision to Implementation

The journey of an Ethereum upgrade is a meticulously planned and executed process, involving extensive research, numerous discussions, and rigorous testing across multiple development environments. The period from late January to early April has been particularly formative for both Glamsterdam and Hegotá, as evidenced by a series of critical All Core Developer calls.

Glamsterdam’s Deliberate Advance:
Following the relatively swift implementation of previous upgrades like Pectra, there was initial optimism for a rapid Glamsterdam rollout. However, the inherent complexity of its tentpole features has necessitated a more measured approach. The past few months have seen client developers deeply immersed in the intricacies of ePBS implementation. This involves not just theoretical design but practical coding and debugging across various client software, ensuring seamless coordination between the execution and consensus layers.

The development timeline for Glamsterdam is structured around a series of "devnets" – isolated test networks where new features are deployed and rigorously evaluated. The current focus is on stabilizing the ePBS-specific devnet, a foundational step before integrating other Glamsterdam features. Developers are aiming to launch the first generalized Glamsterdam devnet in the coming weeks, contingent on the stability of the ePBS implementation. This generalized devnet will gradually incorporate non-headliner features, allowing for comprehensive testing of all proposed EIPs in concert.

Once a stable devnet, encompassing all confirmed features, is achieved, client teams will proceed with cutting official client releases. This will be followed by exhaustive security reviews and deployment onto public testnets. Only after these testnets demonstrate sustained stability will a definitive mainnet fork date be announced, underscoring the developers’ commitment to network safety and reliability. This sequential, iterative process highlights the cautious yet determined approach to introducing significant protocol changes.

Hegotá’s Feature Prioritization:
The selection process for Hegotá’s major features has concluded during this period, marking a significant milestone in its planning phase. Consensus layer developers, through a series of dedicated ACD calls, formally selected FOCIL (EIP-7805) as the primary headliner. This decision reflects a strategic prioritization of protocol stability and validator incentives.

Simultaneously, the execution layer witnessed an intensive debate surrounding various Account Abstraction proposals, most notably EIP-8141 ("Frame transactions"). Despite strong community interest and compelling arguments for its inclusion, a lack of broad consensus on a specific implementation path led to its classification as "Considered for Inclusion" (CFI) as a non-headliner. This decision, while not immediately promoting it to headliner status, comes with a firm commitment from client developers to actively work towards a broadly supported Account Abstraction solution, emphasizing community involvement in shaping its final form. This iterative selection process, which involves extensive discussion and debate among client teams, showcases Ethereum’s decentralized governance model in action.

Checkpoint #9: Apr 2026

Looking ahead, the next chronological step for Hegotá is the opening of submissions for non-headlining EIPs, commencing April 9th. This phase allows for broader community input into the upgrade’s minor features, with a closing date to be announced well in advance, ensuring ample opportunity for proposal and review. The ultimate mainnet launch date for Hegotá remains intrinsically linked to Glamsterdam’s progress, illustrating the cascading nature of Ethereum’s upgrade roadmap.

Supporting Data: Unpacking the Technical Core

The substance of Ethereum’s upgrades lies in the Ethereum Improvement Proposals (EIPs) that define new functionalities and optimizations. Understanding these proposals and their underlying rationale is key to appreciating the current development efforts.

Enshrined Proposer-Builder Separation (ePBS – EIP-7732):
At the heart of Glamsterdam’s complexity is ePBS, a transformative proposal aimed at bringing the block production process entirely within the Ethereum protocol’s consensus mechanism. Currently, block production often involves external mechanisms like MEV-Boost, where block builders (specialized entities that optimize transaction ordering for MEV) propose blocks to proposers (validators chosen to create the next block). ePBS seeks to "enshrine" this separation into the protocol itself.

The primary motivation for ePBS is to enhance censorship resistance and decentralization. By formalizing the roles of proposer and builder, the protocol can better manage potential conflicts of interest and reduce the influence of centralized block-building entities. However, this is a monumental engineering challenge. The existing protocol is designed around a single entity creating a block. Introducing a two-party coordination mechanism, where the protocol must reason about "partial blocks" and handle potential disagreements or failures between the proposer and builder, necessitates changes across virtually every layer of the Ethereum stack. This includes how data is transmitted, how state transitions are validated, and how consensus is reached. The difficulty arises from ensuring fault tolerance, liveness, and security in this newly distributed block production model, which touches upon the very fabric of Ethereum’s architecture.

Gas Repricing and Block-level Access Lists (BALs – EIP-7928):
Glamsterdam also incorporates several EIPs focused on "gas repricings," often bundled together (e.g., EIP-8007). Gas represents the computational effort required to execute operations on the Ethereum network, and repricing aims to optimize the cost of various operations. This can involve making certain operations cheaper to encourage their use, or more expensive to deter inefficient practices, ultimately leading to a more efficient and predictable fee market. The current efforts are primarily focused on aligning gas costs more accurately with actual resource consumption, paving the way for safer increases in the overall gas limit.

Complementing this, Block-level Access Lists (BALs – EIP-7928) represent a "fundamental rethinking of how gas and state access work." In essence, BALs aim to improve the efficiency of transaction processing by allowing transactions to declare in advance which parts of the Ethereum state they intend to access. This pre-declaration can enable client software to optimize how it fetches and caches data, reducing computation and improving overall throughput. However, designing and implementing BALs is a complex task for the execution layer, as it requires deep changes to how the Ethereum Virtual Machine (EVM) interacts with the network’s state database. The integration of BALs with the complexities of ePBS makes their development particularly challenging, requiring careful coordination between execution and consensus client teams.

Increased Maximum Contract Size (EIP-7954):
EIP-7954 proposes an increase to the maximum size of smart contracts deployed on Ethereum. This might seem like a minor adjustment, but it has significant implications for developers. Larger contract sizes allow for more complex and feature-rich decentralized applications (DApps) without the need for intricate modularization or proxy contracts solely to circumvent size limitations. Ecosystem developers have been "constructively vocal" about the importance of this EIP, as it directly impacts their ability to build sophisticated applications on the network. Its prioritization reflects the core developers’ responsiveness to direct feedback from the builder community.

FOCIL (Fork Choice Inactivity Leak – EIP-7805):
Selected as Hegotá’s consensus layer headliner, FOCIL addresses a critical aspect of Ethereum’s proof-of-stake consensus mechanism: validator penalties. In Ethereum’s design, validators who are inactive or propose invalid blocks face penalties, including having a portion of their staked Ether "leaked" away. FOCIL specifically refines the "inactivity leak" mechanism within the fork choice rule. The fork choice rule is how validators agree on the canonical chain in the event of forks. By improving how the inactivity leak is handled within this rule, FOCIL aims to enhance the network’s resilience to validator inactivity and improve the overall stability and security of the consensus layer, especially during periods of low participation or network stress.

Account Abstraction (EIP-8141 and broader efforts):
Account Abstraction (AA) is a long-sought feature for Ethereum, designed to revolutionize user experience by making smart contract wallets as powerful and flexible as externally owned accounts (EOAs). EIP-8141 ("Frame transactions") was one specific proposal debated for Hegotá. AA aims to decouple the signing and validation logic from the account itself, allowing for features like:

  • Programmable transaction validation: Users could define custom rules for transactions (e.g., multi-signature requirements, daily spending limits).
  • Key rotation: Easily change private keys without changing the public address.
  • Gasless transactions: Third parties or smart contracts could pay gas fees on behalf of users.
  • Batching transactions: Combine multiple operations into a single transaction.

The "heated debate" and "lack of consensus over specific implementation choices" highlight the challenge of integrating such a fundamental change. While EIP-8141 didn’t become a headliner, the commitment to work on AA as a "placeholder commitment" for a minor feature underscores its recognized importance for mass adoption and improved user security. This means dedicated effort will continue to find an AA solution that garners broader support among client developers and the community.

Checkpoint #9: Apr 2026

Official Responses: Developer Commitments and Community Empowerment

The Ethereum core development process is characterized by transparency and a commitment to community engagement. The "Checkpoint" series itself is an official response to the need for clear communication, distilling complex technical discussions for a broader audience.

Addressing Implementation Challenges:
The acknowledgement that ePBS is "trickier than anticipated" and Glamsterdam’s progress is "slow but steady" represents an official, candid assessment of the development reality. Rather than downplaying difficulties, developers are communicating the depth of the engineering challenge. Their "undeterred" stance, as noted in the summary, reflects a professional determination to tackle these complexities head-on, prioritizing thoroughness and network stability over rushed timelines. The detailed devnet schedule, including iteration through multiple test environments, is a clear official response to ensure robust implementation before mainnet deployment.

Commitment to Account Abstraction:
The decision regarding Account Abstraction in Hegotá is a prime example of an official response to community demand. Despite the technical and consensus challenges that prevented EIP-8141 from becoming a headliner, the explicit "commitment to work on Account Abstraction as part of the minor feature set" signals that this crucial user-centric feature remains a high priority. This demonstrates responsiveness to ecosystem needs while maintaining a pragmatic approach to technical feasibility and developer consensus. The invitation for community participation in finding a broadly supported AA proposal further reinforces this collaborative ethos.

Empowering EIP Champions:
The launch of the "EIP Champion’s Handbook" on the Protocol Support team website is a direct official response to the need for better guidance for community members and developers looking to propose and shepherd new features through the upgrade process. This resource democratizes access to the complex development pipeline, providing a structured guide for authors and advocates to "champion feature proposals and seek stakeholder feedback." It underscores Ethereum’s commitment to an open, meritocratic, and community-driven development model.

Strategic Roadmapping with the Strawmap:
While not an "official Ethereum roadmap" in the formal sense, the "strawmap" published this year serves as an important unofficial guideline. Its acceptance and utility by the community and developers can be seen as an official acknowledgment of the need for a shared vision and prioritization framework. Its role in "reigniting enthusiasm for having a guideline that can help inform feature choices" demonstrates an adaptive approach to planning, incorporating flexible tools that aid in "helping the community agree on priorities" amidst a highly decentralized development landscape.

Implications: Shaping Ethereum’s Future Landscape

The ongoing developments around Glamsterdam and Hegotá carry significant implications for the future of the Ethereum network, touching upon its technical capabilities, economic model, security posture, and user experience.

Decentralization and MEV Mitigation:
The successful implementation of ePBS in Glamsterdam would be a landmark achievement for Ethereum’s decentralization goals. By moving block building into the protocol, it aims to reduce the influence of centralized block builders and front-running bots, thereby mitigating the negative externalities of MEV. This has profound implications for the fairness and neutrality of the blockchain, potentially making the network more resilient to censorship and manipulation. However, delays in ePBS also mean a longer wait for these benefits, underscoring the trade-off between speed and foundational re-architecture.

Scalability and Transaction Costs:
The ongoing work on gas repricings and the drive to increase the gas limit to 60M (and potentially higher) directly address Ethereum’s scalability challenges. A higher gas limit means more transactions can be processed in each block, which, in theory, can lead to lower average transaction fees during periods of high demand. This has significant implications for the affordability and accessibility of the network for everyday users and DApp developers. The "much higher limits" being tested on devnets signal a long-term vision for significantly increased throughput, positioning Ethereum to handle a greater volume of activity in the future.

Enhanced Developer Capabilities and DApp Complexity:
The prioritization of EIP-7954 (increased maximum contract size) has direct implications for the developer ecosystem. By removing a constraint on contract size, developers gain greater flexibility to build more complex and feature-rich DApps without resorting to cumbersome workarounds. This fosters innovation and allows for the creation of more sophisticated decentralized applications, enriching the overall Ethereum ecosystem.

Improved User Experience and Mass Adoption:
The persistent commitment to Account Abstraction, despite implementation hurdles, is crucial for Ethereum’s journey towards mass adoption. AA promises to transform user interaction with the blockchain, making it more intuitive, secure, and akin to traditional web experiences. Features like social recovery, batch transactions, and custom validation logic will lower the barrier to entry for new users and enhance the security and convenience for existing ones. The eventual rollout of a widely adopted AA solution will be a significant catalyst for mainstream acceptance of decentralized applications.

Checkpoint #9: Apr 2026

Future-Proofing Against Emerging Threats:
The "increasing interest in prioritizing quantum resistance" is a forward-looking implication. As quantum computing advances, the cryptographic underpinnings of current blockchain networks could become vulnerable. While no standalone proposal has emerged, the integration of quantum resistance into Account Abstraction proposals suggests a strategic approach to addressing this long-term threat. This proactive stance is vital for ensuring the enduring security and relevance of Ethereum in a rapidly evolving technological landscape.

The Evolving Pace of Development:
The observation that "Glamsterdam has been proving to be trickier and more slow-going than anticipated" recalibrates expectations for the pace of Ethereum upgrades. While previous upgrades might have instilled a sense of rapid iteration, the foundational nature of ePBS necessitates a more deliberate approach. However, the choice of a single headliner for Hegotá, coupled with an efficient non-headliner process, implies that subsequent upgrades could potentially follow a faster cadence, creating a more balanced rhythm of development. The "strawmap" further implies a move towards a more consensus-driven, albeit unofficial, roadmap that can help manage expectations and align community efforts.

Relevant ACD Calls:

[ January 21st – April 9th ]

ACDT: 76, 75, 74, 73, 72, 71, 70, 69, 68, 67

ACDC: 176, 175, 174, 173

ACDE: 234, 233, 232, 231, 230, 229


In conclusion, the Ethereum network is in a crucial phase of evolution. While the Glamsterdam upgrade presents significant technical challenges, the dedication of its core developers ensures steady, albeit deliberate, progress towards a more decentralized and robust network. The planning for Hegotá, with its focus on consensus stability and a firm commitment to user-centric features like Account Abstraction, outlines a clear path for future enhancements. The collaborative spirit, bolstered by resources like the EIP Champion’s Handbook and the guiding principles of the strawmap, continues to empower a diverse community to collectively shape Ethereum’s destiny, ensuring its continued relevance as a global, open-source platform.