- Ethereum developers plan to launch the Fusaka upgrade in late November or early December pending final testnet results.
- Fusaka will update both the consensus and execution layers to improve scalability and efficiency.
- The upgrade introduces 12 major improvements, including EIP-7594 (PeerDAS), which helps validators handle data more efficiently.
- Fusaka aims to lower costs and make node operation easier, especially for newcomers and smaller participants.
- Future upgrades are planned following Fusaka, with the next major step, Glamsterdam, targeted for 2026.
Ethereum developers are preparing a significant network update, called Fusaka, for release at the end of November or start of December. The timing depends on the results of two upcoming testnet launches.
Fusaka is a dual-layer upgrade that blends changes to Ethereum’s consensus and execution components. Developers say it targets making the blockchain more scalable and efficient for users and institutions. It introduces 12 key changes, called Ethereum Improvement Proposals (EIPs), including EIP-7594, also known as PeerDAS (Peer Data Availability Sampling). This system allows validators to check data availability by getting small samples, which reduces the amount of data they need to download.
“With PeerDAS, the network can handle much more rollup data per block, opening the door for cheaper Layer 2 transactions and greater throughput without sacrificing decentralization,” stated Ethereum core developers in their announcement. Another developer summary said Fusaka would make it easier for individuals and smaller operators to run nodes on Ethereum.
VanEck, an asset manager, noted that Fusaka could reduce costs for rollup transactions and make Ethereum more efficient for large node operators. They emphasized that, because PeerDAS allows validators to avoid downloading all data “blobs” in full, bandwidth and storage needs decrease. This especially matters for institutions running multiple full nodes or clusters, according to VanEck’s analysis.
The remaining EIPs included in Fusaka are designed to fine-tune transaction fee calculations, set more consistent block size limits, and add software tools to help developers create faster and more secure applications. According to core developers, these changes build on Ethereum’s recent upgrades, following Dencun and Pectra, and are meant to keep the network’s upgrade pace strong.
Fusaka already completed an initial test on October 1, with further testing set for October 14 and 28. Once tests finish, developers will determine an official date for the mainnet deployment. They added that Fusaka will lay the foundation for further changes as part of the future Glamsterdam hard fork, which is projected to focus on making block production both safer and more transparent.
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