Ethereum Sets December 3 for Fusaka Upgrade, Introducing PeerDAS to Boost Speed and Efficiency

Ethereum developers have officially confirmed the highly anticipated Fusaka upgrade for December 3, 2025, marking the network’s second major hard fork of the year. The decision was finalized during the All Core Developers Consensus Layer (ACDC) call #168 on Thursday, following the successful deployment of the upgrade on Hoodi, Ethereum’s third and final testnet. With no issues reported, the upgrade is now ready for activation once the mainnet reaches slot 13,164,544, expected around 21:49 UTC on December 3.

The Fusaka upgrade introduces PeerDAS, a groundbreaking feature designed to enhance Ethereum’s scalability and efficiency. PeerDAS enables validators to verify only specific portions of data instead of entire “blobs,” significantly reducing bandwidth usage and operational costs for both validators and layer-2 networks. This innovation is expected to make Ethereum faster, cheaper, and more accessible for developers and users alike.

Ethereum Foundation researcher Alex Stokes, who leads the ACDC calls, praised the collaborative effort behind the upgrade, saying, “Let’s go ahead and do this. This was a big lift to get this together by this point in time… This is a really cool fork.”

The Fusaka upgrade includes 12 improvements in total, showcasing Ethereum’s ongoing commitment to enhancing network performance and user experience. As Ethereum continues its evolution toward greater scalability and efficiency, the Fusaka hard fork represents a major milestone in the network’s roadmap—one that could strengthen its position as the leading blockchain for decentralized applications and smart contracts.

With the successful rollout of Fusaka, the Ethereum community now looks forward to lower fees, improved data verification, and smoother transactions, marking yet another leap forward in the blockchain’s long-term vision for a more efficient decentralized ecosystem.