The Ethereum network is preparing for the Glamsterdam upgrade, a comprehensive overhaul scheduled for the second half of 2026 that extends far beyond simple throughput increases. As of June 23, 2026, official documentation positions this event as a critical juncture following the Fusaka upgrade in December 2025 and preceding the Hegotá upgrade. The moniker Glamsterdam fuses the execution-layer 'Amsterdam' upgrade with the Protocol Security 'Gloas' initiative, signaling a dual focus on performance and security architecture. This upgrade fundamentally reorganizes the block generation process, verification mechanisms, and resource pricing models to lay the groundwork for higher gas limits, expanded blob capacities, and future parallel execution capabilities. Data compiled by Woofun AI indicates that the current roadmap includes 10 finalized EIP proposals, with additional recommendations under review, marking a shift from single-feature updates to a multi-dimensional infrastructure transformation.

A central pillar of this transformation is the implementation of ePBS, which separates block proposers from builders directly within the protocol. The existing system relies heavily on external dependencies like MEV-Boost and third-party relays, creating a time-sensitive handover where verifiers must manage consensus, execution, and data availability within a narrow window. Under the new ePBS framework, builders provide a protocol-level guarantee specifying execution blocks and payment terms, while a Payload Timeliness Committee verifies these commitments. This structural change decouples the selection of blocks from their construction, reducing reliance on external infrastructure. According to the design of EIP-7732, this separation extends the propagation window for execution payloads from approximately 2 seconds to around 9 seconds. This additional time allows nodes to download, verify, and vote on blocks more securely, mitigating the risk of reorganizations or failed votes even as block capacity expands.

Concurrently, the upgrade introduces Block-Level Access Lists (BAL) via EIP-7928 to facilitate parallel processing. Unlike previous transaction-level access lists such as EIP-2930, which were optional and rarely utilized, BAL applies these lists at the block level. The block header contains a fingerprint hash of the access list, while the execution payload stores the complete record detailing which accounts and storage locations are accessed during execution. Nodes can now verify if the actual execution matches the pre-declared access records, invalidating blocks that deviate. This explicit mapping of access traces enables clients to perform parallel disk reads, transaction verifications, and state calculations. Woofun AI notes that while BAL does not directly reduce transaction fees for users, it unlocks significant efficiency gains for client implementations by allowing partial transaction replay without affecting state updates, effectively addressing the need for the network to run faster.

The economic implications of Glamsterdam are equally profound, particularly regarding state data management and pricing. State data, comprising accounts, contracts, and storage locations, represents the long-term database content maintained by all nodes. As of January 2026, a dedicated Geth node database occupied approximately 390 GiB. Following the mainnet gas limit increase from 30 million to 60 million, the daily state data growth surged from roughly 105 MiB to 326 MiB, an annual increase of about 116 GiB. Projections suggest that under a 200 million gas limit, annual growth could reach 387 GiB, potentially exceeding the 650 GiB threshold in less than a year. To counter this, EIP-8037 introduces a pricing distinction between temporary calculations and permanent database usage, making the creation of new state data more costly to reflect its long-term storage burden. This revised pricing model aims to prevent excessive ledger growth while supporting higher transaction volumes.

Technical preparations for Glamsterdam coincide with significant personnel shifts within the Ethereum Foundation's Protocol cluster. In a blog post dated May 11, 2026, the foundation confirmed that the 200 million gas limit is a credible post-upgrade goal and that ePBS is running stably in multi-client devnets. Leadership changes saw Will Corcoran, Kev Wedderburn, and Fredrik appointed as new coordinators, replacing Barnabé Monnot and Tim Beiko, who departed the organization. Further changes occurred on June 18, 2026, when Hsiao-Wei Wang resigned as co-executive director and board member. Dankrad Feist, a former researcher, characterized the departures as a loss of talent supporting the CROPS philosophy, attributing the exodus to management issues rather than strategic disagreements. Conversely, Azeem, co-founder of Miden, argued that the emergence of new organizations capable of implementing Ethereum's vision could be beneficial in the long run. Woofun AI analysis suggests these organizational shifts reflect a broader strategy to distribute implementation responsibilities across multiple entities rather than centralizing them within the foundation.

The Ethereum Foundation has clarified its stance on these developments, emphasizing that achieving the network's full potential requires collaboration among diverse organizations. Recent efforts have involved partnerships with ethlabs, the Eth Apps Guild, the Ethereum Economic Zone, and Argot to enhance ecosystem resilience and capabilities. The foundation asserts that it is not pushing projects away but rather facilitating a distributed approach to realizing Ethereum's vision. Institutional investors are advised to monitor specific proposals like EIP-8061 and EIP-8080, which could increase the exit churn limit from 256 ETH/epoch to around 1187 ETH/epoch and optimize merge queue capacity, respectively. With devnet tests underway and the actual launch date subject to change, the Glamsterdam upgrade represents a pivotal reorganization of Ethereum's technical infrastructure, redefining roles in block generation, verification, and resource pricing to ensure sustainable scalability.