Ethereum has postponed the Glamsterdam upgrade on the Hoodi testnet, pulling a planned 200 million gas-limit test scheduled for October 26 off the calendar.
Core developers agreed at ACDE #248, their regular execution-layer call on October 22, to delay the activation while they investigate how EIP-8037 interacts with mainnet smart contracts. The Ethereum Foundation said the postponement supersedes the schedule and activation instructions in the earlier testnet announcement.
The delay removes three things at once: the Amsterdam activation on the execution layer, the Gloas activation on the consensus layer, and the gas-limit schedule that would have raised Hoodi’s limit to 200M at the same epoch. That gas test was the point of the exercise. Hoodi, Ethereum’s rehearsal testnet, was meant to validate a reportedly roughly 3.3x capacity increase ahead of Glamsterdam, a raise developers had been weighing as the network’s next scaling step. With the activation pulled, that validation slips until the EIP-8037 work is done.
For the scaling roadmap the practical consequence is timing. Glamsterdam’s mainnet schedule was never tied to a fixed date, and the Foundation said this announcement does not set a Glamsterdam mainnet activation date, so no deadline has formally moved. What has moved is the evidence base: the 200M gas limit now has no test run scheduled, and no replacement date exists yet for Hoodi.
The change is procedural on the testnet itself. The Foundation said the move rolls back Hoodi’s configuration for a future upgrade and does not revert the chain’s history. Client releases tagged for the original activation, including Lodestar v1.50.1, Besu 26.10.1 and Nethermind 2.2.1, now belong to a superseded schedule.
No action is required from Ethereum mainnet users or ETH holders, the Foundation said. The delay concerns the Hoodi testnet only.
