Ethereum Locks In Fusaka Hard Fork for December 3 Network Launch

TLDR

• Ethereum’s Fusaka upgrade goes live Dec 3 at slot 13,164,544 with 12 key improvements.
• PeerDAS allows validators to check smaller data parts, cutting bandwidth needs.
• The block gas limit increases 5x from 30M to 150M units in the Fusaka release.
• Fusaka passed tests on Hoodi, Sepolia, and Holesky ahead of the mainnet launch.

Ethereum developers have set December 3 as the official launch date for the Fusaka upgrade, following a successful deployment on the Hoodi testnet. The upgrade will activate on mainnet at slot 13,164,544, introducing multiple changes aimed at improving scalability and efficiency. The most anticipated feature, PeerDAS, will help reduce bandwidth and processing needs for validators, making Ethereum more resource-efficient for Layer 2 networks and builders.

Fusaka Upgrade Confirmed After Hoodi Testnet Passes

Ethereum’s All Core Developers Consensus (ACDC) finalized the release of the Fusaka upgrade during their bi-weekly call #168. The decision came two days after the upgrade was deployed without issues on Hoodi, the final testnet.

The upgrade is now scheduled to activate at 21:49 UTC on December 3, once Ethereum reaches the set block slot. This follows earlier test runs on the Holesky and Sepolia testnets. Alex Stokes, a researcher with the Ethereum Foundation, stated during the call, “Let’s go ahead and do this. This was a big lift to get this together by this point in time.”

Nethermind and other client teams confirmed that testnet operations went smoothly. Their feedback gave developers confidence that the network is ready for the changes.

PeerDAS to Reduce Network Load and Improve Efficiency

One of the key parts of the Fusaka upgrade is EIP-7594, which introduces Peer Data Availability Sampling (PeerDAS). This system allows validators to verify only small parts of data rather than full data blobs.

By doing this, PeerDAS helps reduce the bandwidth and storage demands placed on validators. It also improves performance for Layer 2 networks that rely on data availability. These changes are expected to make Ethereum faster and cheaper for both users and developers.

Developers believe that PeerDAS supports better scaling by letting Ethereum handle more transactions without overloading the network. It’s also designed to improve how Layer 2 solutions like ZK-rollups manage their data.

Block Gas Limit Raised to Expand Transaction Capacity

The Fusaka upgrade will also raise Ethereum’s block gas limit from 30 million to 150 million units. This change allows more operations and data to be included in each block, helping the network process more activity without changing its core structure.

With the increased gas limit, Ethereum can support more complex applications and larger transaction volumes. This change also helps reduce congestion and supports the growth of decentralized applications.

The higher gas limit, combined with PeerDAS, aims to improve overall efficiency without compromising decentralization. This approach allows the network to scale while keeping validator requirements manageable.

Three-Phase Rollout and Next Steps for Ethereum

The Fusaka upgrade will roll out in three parts. First, the mainnet activation on December 3. Then, an expansion of blob capacity for Layer 2 data. Finally, a hard fork will raise data limits even more.

This staged rollout helps developers and node operators adjust to the changes step by step. It also gives time to observe how each phase performs before moving to the next.

After Fusaka, developers will shift focus to the upcoming Glamsterdam upgrade. That release is expected to improve block times and introduce proposer-builder separation, continuing Ethereum’s roadmap under the “Surge” phase.

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