Ethereum Foundation launches Platåberget testnet for Glamsterdam upgrade

The Ethereum Foundation opened the Platåberget testnet, an early public testing ground for the Glamsterdam upgrade — the combination of the Gloas and Amsterdam upgrades. The upgrade introduces breaking changes for application developers: any tool that relies on a hardcapped maximum gas limit — such as wallets, indexers, and gas estimators — will break and must be updated. Glamsterdam's repricing means gas pricing will no longer be capped at a fixed hardcoded maximum, so developers should update tooling that assumes such a cap.

The Sepolia testnet Glamsterdam upgrade is now targeting October 6, per the latest Ethereal weekly update, as the changes continue validation across consensus client teams ahead of mainnet.