Ethereum developers scheduled the Glamsterdam upgrade for Sepolia testnet on October 6, 2023, but ongoing finalization bugs may delay mainnet activation beyond December 2026.
Tech & Launches ·
Ethereum developers set October 6, 2023, as the target date for deploying the Glamsterdam upgrade to the Sepolia testnet, though the upgrade's success hinges on resolving bugs discovered during private devnet testing. The largest devnet instance, Glamsterdam-Devnet-9, has surfaced finalization issues and network-freezing bugs, prompting developers to construct an additional devnet, Devnet-11, to continue validation work.
The timeline for subsequent testnet phases and mainnet activation remains fluid. Developers have expressed hope for mainnet deployment by December 2026, though this depends on successful outcomes from ongoing testing cycles. No confirmed dates have been set for the Hoodi testnet or the production network release.
What remains unclear is whether the newly created devnet will resolve the finalization and stability problems encountered in earlier iterations, and whether any delays to the Sepolia fork would cascade into the broader upgrade schedule.