Glamsterdam Testnet Announcement
Ethereum’s Sepolia testnet will activate the Glamsterdam upgrade on Oct 6 2026, adding proposer‑builder separation, block‑level access lists, and new gas pricing.
The announcement follows the Fusaka upgrade and schedules Glamsterdam’s activation on Sepolia, with no mainnet date yet.
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Protocol upgrade announcement with technical details and scheduled activation—core blockchain coverage.