Ethereum's Glamsterdam upgrade goes live on Sepolia testnet
The Glamsterdam upgrade has launched on Ethereum's Sepolia testnet, one of the last major rehearsals before it reaches the main network.

Ethereum's Glamsterdam upgrade has launched on the Sepolia testnet, marking one of the final major rehearsals before the changes are activated on the mainnet.
The upgrade is intended to bring greater efficiency and scalability to Ethereum's main network. Deploying it on a testnet first lets developers watch how the changes behave on a functioning network before they are committed to mainnet.
What happens next
Sepolia is described as one of the last large-scale trial runs ahead of Glamsterdam's mainnet activation, although no date for that final step was given in the source material. Testnet deployments of this kind are a standard stage in Ethereum's upgrade process.
Ethereum upgrades typically move through several testnets in sequence, giving client teams and application developers time to prepare. Mainnet activation generally follows only after those rehearsals show the changes are stable. The remaining timeline for Glamsterdam has yet to be confirmed.