Ethereum to Launch Fusaka Hard Fork on December 3
Ethereum’s next major upgrade, the Fusaka hard fork, has successfully launched on the final test network “Hoodi” and is now scheduled for deployment on the mainnet on December 3. The update introduces a series of improvements aimed at enhancing scalability, data efficiency, and network security.
Final testing completed on Hoodi testnet
The Fusaka fork marks one of the most significant upgrades to Ethereum since Dencun, focusing on optimizing how validators process and share data across the network. Developers confirmed that the test implementation on the **Hoodi testnet** concluded without issues, signaling readiness for the mainnet rollout.
Nethermind is among the most widely used Ethereum validator clients, and its confirmation was considered a major green light by the community. Other client teams, including Geth and Prysm, are expected to finalize compatibility updates in the coming weeks.
Key improvement: Peer Data Availability Sampling (PeerDAS)
At the heart of the Fusaka upgrade is **EIP-7594**, introducing a mechanism known as **Peer Data Availability Sampling (PeerDAS)**. This technology allows validators to read only small data fragments — rather than full “blobs” — when verifying transactions and layer-2 rollups.
This new approach significantly reduces the computational and storage burden on nodes, improving network scalability without compromising decentralization or security.
What PeerDAS means for Ethereum
PeerDAS represents a key step toward making **data sharding** more efficient. By distributing smaller portions of data across validators, Ethereum can process a larger number of rollup transactions simultaneously, cutting costs and reducing latency for users.
The mechanism also strengthens interoperability between layer-1 and layer-2 networks — a crucial factor for scaling Ethereum’s ecosystem of DeFi, NFT, and AI-integrated applications.
Developers expect PeerDAS to reduce bandwidth requirements by more than 60%, paving the way for future upgrades that will further improve performance on both main and secondary layers.
Beyond scalability: strengthening Ethereum’s foundation
In addition to EIP-7594, Fusaka bundles several security and performance enhancements, including better synchronization between consensus and execution layers and improvements to node communication protocols. Together, these changes aim to enhance the reliability and fault tolerance of the Ethereum network.
The update comes at a critical time as Ethereum continues to face competition from faster and cheaper layer-1 networks. Fusaka’s optimizations are expected to reaffirm Ethereum’s position as the backbone of the decentralized web.
Mainnet launch and community expectations
The mainnet deployment of Fusaka is scheduled for **December 3, 2025**, pending final coordination between client developers and validators. Node operators and staking providers are advised to prepare for mandatory client updates in the weeks leading up to activation.
Community sentiment around the upgrade remains positive, with developers highlighting that Fusaka represents “the most technically mature Ethereum release to date.”
If successful, the update will set the stage for Ethereum’s next phase of evolution — a blockchain capable of scaling globally without sacrificing decentralization.
Editorial Team — CoinBotLab