September 28, 2026 Ethereum Foundation Ethereum Technology
Glamsterdam Testnet Announcement
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Key points from the official feed
- Glamsterdam follows the Fusaka upgrade, advancing Ethereum's L1 scaling roadmap with enshrined proposer-builder separation, block-level access lists, and changes to gas pricing that better reflect the cost of execution and state growth.
- The Glamsterdam network upgrade is scheduled to activate on Sepolia at epoch 353,024, slot 11,296,768 (October 6,
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Read the full original article Reporting source: Ethereum Foundation · Publication date: Sep 28, 2026.