Ethereum's Next Stop Glamsterdam: The Core Upgrades You Must Know
The Glamsterdam upgrade, scheduled for late 2026, is a major Ethereum hard fork combining the Amsterdam execution layer and Glasgow consensus layer updates. Its primary goal is not simply increasing throughput but restructuring Ethereum's block production, validation, and resource pricing to enable future scaling.
Key technical changes include **EIP-7732 (ePBS)**, which formally enshrines proposer-builder separation into the protocol. This decouples consensus and execution tasks, extending the execution payload propagation window to ~9 seconds. This provides more time for node verification, allowing for safer increases in block capacity (Gas limit) in the future.
Another core component is **EIP-7928 (Block-Level Access Lists - BAL)**. It mandates a list of all state accessed within a block, moving this feature from an optional transaction-level (EIP-2930) to a mandatory block-level requirement. This explicit access list enables client optimizations like parallel disk reads and state root computations, paving the way for parallel execution.
To manage long-term state growth, **EIP-8037** increases the cost of creating new state (e.g., accounts, storage slots), separating the pricing of permanent database bloat from temporary computation. This allows execution capacity to scale more aggressively without causing state size to explode proportionally.
The planned upgrade bundle includes around 10 EIPs categorized into: 1) Core protocol restructuring (ePBS, BAL), 2) Resource pricing adjustments (state costs, calldata costs), and 3) EVM/developer improvements. Several other EIPs, including those potentially improving staker exit liquidity (EIP-8061, EIP-8080), are under consideration.
The technical development coincides with significant personnel changes within the Ethereum Foundation's Protocol team. The Foundation's official communications frame this as part of a broader shift towards a "coalition of organizations" working on the Ethereum roadmap, citing new entities like ethlabs and the Ethereum Economic Zone.
In summary, Glamsterdam represents a foundational re-engineering of Ethereum's block pipeline and economic model—focusing on ePBS, BAL, and multi-dimensional resource pricing—to prepare the network for sustainable, high-throughput scaling in the years ahead.
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