Ethereum’s Glamsterdam improve is scheduled for Hoodi, a take a look at community, on Oct. 26, 2026, at 17:42:48 UTC, giving its node operators a deadline to improve software program. The take a look at pairs adjustments 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 on account of this Hoodi announcement.
All Hoodi operators should replace their execution and consensus purchasers earlier than activation. Validators should replace each the beacon node and validator shopper, and evaluation new duties, builder-tooling compatibility and gas-limit settings to observe the upgraded testnet.
The Basis’s confirmed Hoodi releases, as checked Oct. 17, are:
| Layer | Shopper | 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 take a look at adjustments
Hoodi’s 200 million fuel goal is a deliberate finances for computational work per block. The gas-limit schedule units shopper defaults and suggestions whereas preserving operator preferences. The precise block restrict adjusts steadily beneath present guidelines, so the goal isn’t an immediately enforced ceiling.
Throughput will depend on transaction complexity, whereas charges additionally rely on 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 test execution. Block-level access lists document accessed accounts, storage and state adjustments so purchasers 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 mounted stipends, hardcoded limits or remaining-gas assumptions. The Basis advises testing contracts and fuel estimation beneath the brand new guidelines.
