ME News reports that on September 29 (UTC+8), the Ethereum Foundation announced that the Glamsterdam network upgrade will activate on Sepolia testnet at 21:53:36 Beijing Time on October 6, 2026 (epoch 353,024, slot 11,296,768). The mainnet activation date has not yet been determined. This upgrade integrates the Execution Layer Amsterdam with the Consensus Layer Gloas, with key improvements including: built-in Proposer-Builder Separation (ePBS, EIP-7732), formally incorporating block proposal and construction into the protocol; Block-Level Access Lists (BALs, EIP-7928), enabling parallel state reads and transaction validation; and adjusted gas pricing to more accurately reflect execution and state growth costs (EIP-8037, EIP-8038, etc.). Node operators must update their execution and consensus layer clients before activation. Compatible client versions have been progressively released; see the official announcement for a detailed compatibility list. Mainnet users and ETH holders do not need to take any action at this time. (Source: Foresight News)
The Ethereum Foundation will activate the Glamsterdam upgrade on the Sepolia testnet on October 6, 2026.
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Summary
The Ethereum Foundation announced on September 29 (UTC+8) that the Glamsterdam network upgrade will activate on the Sepolia testnet on October 6, 2026, at 21:53:36 Beijing Time (epoch 353,024, slot 11,296,768). This on-chain update confirms the integration of the Amsterdam execution layer and the Gloas consensus layer, including ePBS, BALs, and revised gas pricing. Node operators must upgrade both execution and consensus clients prior to activation. Mainnet users and ETH holders do not need to take any action.
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