Ethereum developers cancel Oct. 26 Glamsterdam upgrade on Hoodi testnet

Ethereum’s next big upgrade has hit a speed bump on its final practice track. Developers have called off the October 26 activation of Glamsterdam on the Hoodi testnet. Node operators are now being told to run client software that does not include the scheduled fork. The mainnet activation date, which was never set in stone, remains undecided. What changed on Hoodi Glamsterdam had been slated to go live on Hoodi on October 26, 2026, at 17:42:48 UTC. That timestamp corresponded to epoch 132,352, the point where the network would have switched to the new rules. Hoodi is one of Ethereum’s public test networks. It is where client teams and validators rehearse an upgrade under realistic conditions before anything touches real money. The prior plan had a clear sequence. Operators were expected to upgrade both their execution and consensus clients to fork-ready versions before the activation epoch. Releases such as Lodestar 1.50.0 and Nimbus 26.10.1 had been listed among the compatible versions. Skipping that step under the old plan meant getting stranded on the pre-fork chain. The new guidance flips the risk: operators should avoid running a fork-enabled build on Hoodi for now. What Glams...