Glamsterdam Test Launch Set for Sept 28, Mainnet Date Still Pending
Ethereum's next major upgrade, Glamsterdam, is set to activate on the Sepolia test network on September 28, 2026. This date is provisional and applies only to the test network, with no confirmed date yet for the mainnet upgrade.
The upgrade process involves multiple test networks before reaching the mainnet to ensure stability and security.
ETH holders do not need to take any action for this testnet upgrade, as it is a testing phase only. Any claims of required wallet migrations are scams, according to developer minutes.