Ethereum Prepares for Fusaka Hard Fork After Final Testnet Deployment
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Ethereum developers have finalized plans for the network’s next major hard fork, Fusaka, marking a key step toward improved scalability, data efficiency, and Layer-2 performance.
The upgrade follows months of coordinated testing across multiple networks and is now officially scheduled for deployment on December 3.
The launch date was confirmed during the All Core Devs call this Thursday, just two days after Fusaka’s successful rollout on the Hoodi testnet – the final stage in a sequence of deployments that also included Holesky and Sepolia earlier this month.
Key Technical Upgrades
Fusaka will introduce around a dozen Ethereum Improvement Proposals (EIPs) aimed at enhancing sustainability and validator performance. Central among them is Peer Data Availability Sampling (PeerDAS), a mechanism that streamlines how validators access and distribute data. Initially planned for February’s Pectra upgrade, PeerDAS was postponed to allow for additional testing.
The upgrade also raises Ethereum’s block gas limit from 30 million to 150 million units, potentially doubling the network’s blob capacity and significantly expanding transaction throughput.
Preparing for Mainnet Deployment
To strengthen security ahead of activation, the Ethereum Foundation has been running a four-week audit contest offering up to $2 million in rewards to researchers who uncover vulnerabilities.
With testing phases now complete and the audit in motion, Fusaka is positioned to become one of Ethereum’s most impactful network upgrades since the Merge – setting the stage for faster scaling and more robust onchain data availability.
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