Ethereum News Today: Ethereum Fusaka Hard Fork Activates November 2025 for Scalability and Efficiency Gains

Ethereum’s Fusaka hard fork is set to activate on the mainnet in November 2025, marking another major step in the network’s ongoing development cycle. Scheduled for activation around November 5, 2025, the upgrade focuses on back-end improvements aimed at enhancing scalability, node resilience, and overall system efficiency without introducing disruptive changes to user-facing features or smart contracts [1].

Unlike the Pectra upgrade in May 2025, which brought visible changes like account abstraction and increased staking limits, Fusaka operates more subtly. It bundles 11 Ethereum Improvement Proposals (EIPs) that refine the network’s infrastructure. Among these, EIP-7594 (PeerDAS) is a key scalability update, introducing peer data availability sampling to reduce the burden on nodes by allowing them to process data blobs more efficiently [1]. EIP-7825 focuses on spam resistance, preventing malicious actors from overwhelming the network with low-cost, high-volume transactions [1].

The Fusaka hard fork is part of Ethereum’s accelerated six-month upgrade cycle. After a Devnet-3 test in July 2025 and a series of public testnets in September and October, developers have refined the codebase and addressed potential bugs ahead of mainnet deployment [1]. The timing aligns with Ethereum’s Devconnect conference in Buenos Aires, scheduled for November 17–22, 2025, underscoring the community’s commitment to synchronized progress [1].

Several EIPs within Fusaka are expected to yield long-term benefits for Ethereum’s performance. For instance, EIP-7935 outlines a gradual increase in the gas limit from 45 million to 150 million units, potentially enabling more transactions per block and improving throughput [1]. EIP-7934 sets an upper cap on encoded block sizes, helping to prevent excessive bloat while maintaining compatibility with existing infrastructure [1]. Meanwhile, EIP-7951 introduces native support for the P-256 elliptic curve, bringing Ethereum closer to interoperability with Web2 security systems [1].

From a user perspective, the effects of Fusaka will likely be subtle. While smart contracts and DApps will remain fully compatible and unchanged, the network’s underlying improvements should result in more stable gas fees and smoother transaction processing during peak usage periods [1]. However, increasing the gas limit also raises concerns about storage and bandwidth demands, which could favor larger, industrial-scale validators over smaller participants [1].

The Ethereum 2025 roadmap reflects a disciplined yet ambitious approach to development. With an EIP freeze set on August 1, 2025, developers had six weeks to test, refine, and polish the code before deployment [1]. The mainnet activation is expected to occur by November 12, 2025, and will be triggered upon reaching a specific block height [1].

Looking ahead, the Ethereum community is already preparing for the next major upgrade—Glamsterdam in 2026—which may include proposals like EIP-7782 to reduce block times to six seconds and further enhance throughput [1]. Discussions about gas limit adjustments and expanded DeFi support are also ongoing, with decisions expected to emerge from the August 2025 AllCoreDevs – Execution meeting [1].

The Fusaka upgrade exemplifies Ethereum’s ethos of continuous, incremental improvement. By refining the network’s architecture without overhauling its user experience, developers are laying the groundwork for future innovations while maintaining the stability and reliability that have become hallmarks of the Ethereum ecosystem [1].

Source: [1] Ethereum’s Fusaka Upgrade Set for November: What You Need to Know (https://cointelegraph.com/explained/ethereums-fusaka-upgrade-set-for-november-what-you-need-to-know)