Ethereum Fusaka completes Hoodi testnet, Dec 3 mainnet activation

Ethereum’s Fusaka upgrade completed its final dress rehearsal on the Hoodi testnet on Tuesday and is set to activate on the mainnet on December 3, developers said, marking a major step in the network’s multi-stage plan to boost scalability and reduce costs. The Hoodi test went live around 1853 UTC and followed successful simulations on the Holesky and Sepolia testnets, officials said.

Fusaka bundles more than a dozen Ethereum Improvement Proposals intended to lower bandwidth and storage demands for validators and Layer 2 networks while preparing the protocol for parallel execution. Its headline feature, Peer Data Availability Sampling, implemented as EIP-7594 and commonly called PeerDAS, lets validators check smaller portions of data instead of entire data blobs, which developers say will reduce operational costs and make data availability more efficient for rollups. The upgrade also raises the block gas limit, with EIPs such as 7825 and 7935 designed to increase transaction capacity and ready the chain for parallel processing of smart contracts.

Developers on the All Core Developers Consensus call finalized the December 3 activation, specifying that Fusaka will go live when...