Ethereum has activated the Glamsterdam upgrade on its Sepolia testnet, a key step before the mainnet rollout. But what is Glamsterdam? It is a major network upgrade that introduces significant changes to Ethereum's architecture, aimed at improving scalability and efficiency.

The upgrade was deployed on October 6, with further activations on October 7. Developers are now testing to ensure everything works smoothly. Glamsterdam builds on previous upgrades like Dencun, continuing Ethereum's evolution to handle more transactions at lower costs.

Key features include improvements to how data is processed and validated on the network. If testing succeeds, the mainnet activation will follow in the coming weeks. For users, the upgrade should mean faster transactions and lower fees over time.

Validators and node operators need to update their software. The Ethereum community has been preparing for months. The upgrade is named after Amsterdam, continuing Ethereum's tradition of city-themed releases.

Community members should follow official channels for updates.