Ethereum developers confirmed Glamsterdam will activate on Sepolia October 6 before a later Hoodi test.Developers warned free test ether could let disposable builders win bids and withhold execution payloads.Client teams were urged to release Sepolia-ready software by September 29, leaving seven review days.Devnet-11 completed its Gloas transition and raised gas limits from 60 million to 200 million.Ethereum has not scheduled Glamsterdam mainnet activation, with its roadmap still targeting fourth quarter 2026.