Ethereum's Fusaka Upgrade Scheduled for December 3, 2025, Featuring PeerDAS
Ethereum developers have officially confirmed the Fusaka upgrade, scheduled to activate on December 3, 2025. One of the main highlights of this upgrade is the introduction of PeerDAS, a technological advancement that allows validators to verify only portions of data instead of the entire dataset. This feature will significantly reduce bandwidth requirements and operational costs for validators.
The Fusaka upgrade comprises 12 improvements aimed at enhancing network efficiency and scalability. The upgrade will activate precisely at Ethereum block slot 13,164,544, expected to occur at 21:49 UTC on December 3, 2025.
This milestone was agreed upon during the All Core Developers Consensus Layer (ACDC) call #168. The decision came shortly after the successful deployment of the upgrade on the Hoodi testnet, affirming its readiness for the mainnet.
Alex Stokes, a researcher at the Ethereum Foundation, expressed positive sentiments regarding the upgrade's progress, underscoring the collaborative efforts of the Ethereum developer community.
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