Ethereum developers scheduled the Glamsterdam upgrade for the Hoodi testnet at epoch 132,352 on October 26, 2026. Following its Sepolia launch on October 6, Hoodi represents the final testnet before mainnet. The upgrade raises Hoodi's gas limit 3.3-fold from 60 million to 200 million and introduces enshrined proposer-builder separation and block-level access lists. Mainnet activation remains undecided as client teams evaluate testnet performance.
Hoodi testnet Glamsterdam upgrade schedule
- ▪The Hoodi testnet deployment follows the Glamsterdam upgrade's earlier activation on the Sepolia testnet on October 6, 2026.
- ▪Ethereum developers scheduled the Glamsterdam upgrade for the Hoodi testnet at epoch 132,352, slot 4,235,264, on October 26, 2026, at 17:42:48 UTC.
- ▪Ethereum researcher Toni Wahrstätter identified Hoodi as the final testnet for the Glamsterdam upgrade before mainnet activation.
Hoodi gas limit increase
- ▪Ethereum researcher Toni Wahrstätter suggested a 300 million gas limit could be a realistic next step after the 200 million target.
- ▪The Hoodi testnet gas limit will increase from 60 million to 200 million at epoch 132,352 during the October 26, 2026 Glamsterdam activation.
Hoodi node operator upgrade requirements
- ▪The Ethereum Foundation's confirmed Hoodi client releases as of October 17, 2026, include Besu 26.10.0, Grandine, Lighthouse, Erigon 3.3.0, Go-ethereum, and Reth.
- ▪Hoodi node operators must update both execution and consensus clients, and validators must upgrade beacon nodes and validator clients before October 26, 2026.
EIP 7732 proposer-builder separation details
- ▪EIP 7732 establishes a payload timeliness committee whose members attest to whether a builder's payload and blob data are available on time.
- ▪EIP 7732 introduces enshrined proposer-builder separation to move block payload exchange, commitment, and payment into the core Ethereum consensus protocol.
Glamsterdam mainnet launch timeline status
- ▪Mainnet activation timing for Glamsterdam will be announced once decided by client teams following post-testnet reviews.
- ▪The Ethereum Foundation has not set a mainnet launch or activation date for the Glamsterdam upgrade.
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