Ethereum’s Glamsterdam improve is scheduled for Hoodi, a check community, on Oct. 26, 2026, at 17:42:48 UTC, giving its node operators a deadline to improve software program. The check pairs modifications to dam manufacturing and validation with a scheduled 200 million fuel goal.
The Ethereum Foundation’s Oct. 16 announcement fixes the subsequent testnet deployment after Glamsterdam’s Oct. 6 activation on Sepolia. Mainnet timing stays undecided. ETH holders and mainnet operators don’t have any motion to take because of this Hoodi announcement.
All Hoodi operators should replace their execution and consensus shoppers earlier than activation. Validators should replace each the beacon node and validator shopper, and overview new duties, builder-tooling compatibility and gas-limit settings to comply with the upgraded testnet.
The Basis’s confirmed Hoodi releases, as checked Oct. 17, are:
| Layer | Consumer | Listed launch |
|---|---|---|
| Execution | Besu | 26.10.0 |
| Execution | Ethrex | 30.0.0-rc.2 |
| Execution | Nethermind | 2.2.0 |
| Consensus | Lodestar | 1.50.0 |
| Consensus | Nimbus | 26.10.1 |
| Consensus | Prysm | v7.3.0 |
| Consensus | Teku | 26.10.1 |
Ethrex’s listed model is a launch candidate. Grandine, Lighthouse, Erigon, go-ethereum and Reth stay unlisted; operators ought to use releases whose notes verify this Hoodi activation.
Besu 26.10.0 migrates Bonsai code storage on first startup and retains extra historical past when pruning. Downgrading requires the documented besu storage revert-code-format command earlier than an older model can reopen the database.
What the scaling check modifications
Hoodi’s 200 million fuel goal is a deliberate price range for computational work per block. The gas-limit schedule units shopper defaults and proposals whereas preserving operator preferences. The precise block restrict adjusts progressively underneath present guidelines, so the goal will not be an immediately enforced ceiling.
Throughput is determined by transaction complexity, whereas charges additionally depend upon demand.
Glamsterdam combines Amsterdam on the execution layer with Gloas on the consensus layer. Enshrined proposer-builder separation strikes the trade between block proposers and builders into the protocol and offers validators extra time to examine execution. Block-level access lists document accessed accounts, storage and state modifications so shoppers can carry out extra work in parallel.
Builders even have testing to do: modified fuel pricing can have an effect on contracts that depend on fastened stipends, hardcoded limits or remaining-gas assumptions. The Basis advises testing contracts and fuel estimation underneath the brand new guidelines.
