Following its Sepolia activation on October 6, Glamsterdam will activate on Hoodi at epoch 132,352 on October 26, 2026, 17:42:48 UTC, with Hoodi's gas limit raised to 200M. Mainnet timing is undecided. The upgrade combines the Amsterdam execution and Gloas consensus layers, headlined by enshrined proposer-builder separation (EIP-7732) and block-level access lists (EIP-7928) to boost L1 throughput. It also reprices gas (state creation and access costs) and adds ETH transfer logs, a SLOTNUM opcode, and higher contract size limits. Node operators must update both clients before activation; client releases are being confirmed.

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