Ethereum core developers have tentatively scheduled November 2025 for the launch of Fusaka, the network’s next major hard fork. This highly anticipated upgrade is expected to bring significant improvements to scalability, network efficiency, and overall performance. It includes a total of 11 Ethereum Improvement Proposals (EIPs), with EIP-7825 at the forefront—aimed at enhancing the protocol’s resilience against potential attacks.
One of the most notable changes is a proposed increase in Ethereum’s gas limit to 150 million, which would allow more transactions per block. This would make Ethereum more efficient and capable of handling higher demand, especially as decentralized applications (dApps) continue to grow.
Testnet Schedule and Developer Coordination
To ensure the Fusaka upgrade is implemented smoothly, two public testnets are planned ahead of the mainnet release—one in September and the other in October. These testnets are crucial for spotting bugs, ensuring compatibility, and fine-tuning performance before the full deployment.
However, Ethereum developers are feeling the pressure to meet this timeline. The Devconnect conference is scheduled in Buenos Aires from November 17–22, and developers aim to complete the upgrade before the event. Ethereum contributor Nixo emphasized the need for stronger coordination among teams to keep client releases aligned and on track.
In a move to reduce complexity, EIP-7907, which would have doubled the maximum contract code size, has been removed from the Fusaka upgrade. This decision will help streamline testing and avoid delays.
What’s Coming After Fusaka: Glamsterdam in 2026
Looking further ahead, the Ethereum community is already preparing for the next major upgrade, codenamed Glamsterdam, expected in 2026. One of the biggest changes under discussion is reducing Ethereum’s block time from 12 seconds to 6 seconds, which would significantly improve transaction speed and user experience for dApps.
Support continues to grow for additional gas limit increases, which would further reduce transaction costs and help Ethereum scale more effectively.
Ethereum’s roadmap is packed with upgrades designed to maintain its lead as the top smart contract platform. As Fusaka approaches, developers and users alike are looking forward to faster, more secure, and more scalable blockchain performance.
