Ethereum's September 28 Glamsterdam announcement schedules activation on the Sepolia test network for October 6, 2026 at 13:53:36 UTC. It states that Hoodi and mainnet activation dates have not been decided. Ethereum Foundation: Glamsterdam testnet announcement
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EIP-7732 brings proposer-builder separation into the consensus protocol. It describes a proposer accepting a builder's payload commitment, with the builder revealing the payload subsequently and the protocol handling payment. The specification also changes validation timing and includes a payload timeliness committee. Its purpose is a change in block-production mechanics, rather than a promise about token prices. Ethereum Improvement Proposal 7732: proposer-builder separation EIP-7928 defines block-level access lists containing information about accessed accounts and storage, alongside state changes. Such information can help clients organise state reads and transaction validation more efficiently. For infrastructure teams, the relevant work includes ensuring that software can construct, transmit and verify the required data. The specification should be read as a technical requirement, not as a measured mainnet performance result. Ethereum Improvement Proposal 7928: block-level access lists WFN analysis: the practical milestone is successful testing across the software a service actually uses. A custody or exchange team may depend on clients, indexers, transaction estimators and monitoring systems supplied by different parties. One component announcing support does not prove the complete deposit or withdrawal workflow is ready.
EIP-7732 brings proposer-builder separation into the consensus protocol. It describes a proposer accepting a builder's payload commitment, with the builder revealing the payload subsequently and the protocol handling payment. The specification also changes validation timing and includes a payload timeliness committee. Its purpose is a change in block-production mechanics, rather than a promise about token prices. Ethereum Improvement Proposal 7732: proposer-builder separation EIP-7928 defines block-level access lists containing information about accessed accounts and storage, alongside state changes. Such information can help clients organise state reads and transaction validation more efficiently. For infrastructure teams, the relevant work includes ensuring that software can construct, transmit and verify the required data. The specification should be read as a technical requirement, not as a measured mainnet performance result. Ethereum Improvement Proposal 7928: block-level access lists WFN analysis: the practical milestone is successful testing across the software a service actually uses. A custody or exchange team may depend on clients, indexers, transaction estimators and monitoring systems supplied by different parties. One component announcing support does not prove the complete deposit or withdrawal workflow is ready.
The Foundation also flags changes to gas accounting and recommends testing contracts that depend on fixed gas assumptions. The announced need for preparation does not quantify a universal fee reduction or establish that every application will behave identically. Ethereum Foundation: Glamsterdam testnet announcement Watch the official activation table, compatible client releases and testnet results for subsequent changes. A mainnet date needs its own confirmation. Readers should also distinguish Glamsterdam's scheduled scope from discussions about later upgrades: a proposal considered for a future fork is not automatically part of this testnet deployment.
A testnet schedule is the confirmed milestone
Glamsterdam combines the Amsterdam execution-layer upgrade with the Gloas consensus-layer upgrade. Its headline changes include enshrined proposer-builder separation and block-level access lists. Operators are instructed to update both execution and consensus clients before activation. Compatible releases are to be added to the announcement's tables as they are confirmed. Ethereum Foundation: Glamsterdam testnet announcement
The scheduled timestamp concerns Sepolia, rather than the network carrying ordinary mainnet balances. Treating October 6 as a confirmed mainnet launch would contradict the announcement. Test preparation and production deployment are separate stages, with different consequences for operators and application teams.
The two headline changes address different parts of validation
EIP-7732 brings proposer-builder separation into the consensus protocol. It describes a proposer accepting a builder's payload commitment, with the builder revealing the payload subsequently and the protocol handling payment. The specification also changes validation timing and includes a payload timeliness committee. Its purpose is a change in block-production mechanics, rather than a promise about token prices. Ethereum Improvement Proposal 7732: proposer-builder separation
EIP-7928 defines block-level access lists containing information about accessed accounts and storage, alongside state changes. Such information can help clients organise state reads and transaction validation more efficiently. For infrastructure teams, the relevant work includes ensuring that software can construct, transmit and verify the required data. The specification should be read as a technical requirement, not as a measured mainnet performance result. Ethereum Improvement Proposal 7928: block-level access lists
WFN analysis: the practical milestone is successful testing across the software a service actually uses. A custody or exchange team may depend on clients, indexers, transaction estimators and monitoring systems supplied by different parties. One component announcing support does not prove the complete deposit or withdrawal workflow is ready.
What must be confirmed before a production timetable is reported?
The Foundation also flags changes to gas accounting and recommends testing contracts that depend on fixed gas assumptions. The announced need for preparation does not quantify a universal fee reduction or establish that every application will behave identically. Ethereum Foundation: Glamsterdam testnet announcement
Watch the official activation table, compatible client releases and testnet results for subsequent changes. A mainnet date needs its own confirmation. Readers should also distinguish Glamsterdam's scheduled scope from discussions about later upgrades: a proposal considered for a future fork is not automatically part of this testnet deployment.