Sepolia Test Scheduled for Ethereum's Glamsterdam as Access List Proposal Progresses
Ethereum's Glamsterdam upgrade is set to activate on the Sepolia testnet on October 6, 2026, according to the upgrade specification. Researcher Toni Wahrstätter said EIP-7928, which introduces Block-Level Access Lists, is nearing its final stage but still requires testing. No dates have been set for the Hoodi testnet or mainnet, with those decisions depending on further testing and client-team coordination.
Ethereum’s Glamsterdam upgrade is set to reach Sepolia on October 6, 2026, at 13:53 UTC, per its specification. Researcher Toni Wahrstätter says EIP-7928, introducing Block-Level Access Lists, is close to final but still needs testing. Hoodi and mainnet dates remain undecided, pending client-team coordination.
Glamsterdam bundles several changes. EIP-7928 would record accounts and storage touched during block execution, helping nodes spot dependencies and process independent transactions in parallel rather than sequentially. The upgrade also includes enshrined proposer-builder separation and permanent-data cost adjustments intended to limit database growth and node hardware demands.
If testing succeeds, Glamsterdam could affect Ethereum users, developers, and node operators by potentially improving transaction processing capacity and reducing hardware burdens. Faster validation and synchronization may make network participation more accessible, though outcomes depend on testing and client coordination. Broader society may see indirect effects if lower operational demands support more resilient infrastructure for crypto applications, but no mainnet timeline exists, so any real-world impact remains uncertain.