Ethereum's Glamsterdam upgrade extends block validation to 6–9 seconds

The core architecture shift

The largest architectural change in Glamsterdam is EIP-7732, or enshrined proposer-builder separation. This proposal separates consensus-block validation from execution-payload validation, introducing a new workflow where the next block proposer gets six seconds to validate a payload, while other validators receive nine seconds. This design expands the roughly two-second critical path that previously constrained block production.

EIP-7732 creates a Payload Timeliness Committee to report whether a builder revealed its payload on time, adding staked builders to the network's consensus layer.

State and gas optimization

EIP-7928 adds block-level access lists that record the accounts and storage locations touched by a block. The map lets clients parallelize disk reads, transaction validation, state-root calculation and state reconstruction, improving validator efficiency across the network.

Three gas-cost proposals remain in Review stage. EIP-2780 currently charges 21,000 execution gas for a transfer to an existing externally owned account, while the state-creation proposal charges 183,600 state gas for creating a new account. EIP-8037 raises a storage write from 2,800 to 10,000 gas.

Testing before mainnet

Platåberget has an open, permissionless validator set, turning the upgrade into a practical test of whether client pairs, validators, builders, and supporting infrastructure continue to work together. The testnet gives the Ethereum ecosystem a staging ground to rehearse Glamsterdam's coordinated changes before the fork reaches established testnets and mainnet.