Ethereum Fusaka Fork: November 2025 Scalability Upgrade
Ethereum Fusaka Fork, the network’s November 2025 hard fork, bundles 11 infrastructure EIPs targeting scalability and node resilience. Scheduled for activation at a predefined block height between November 5–12, 2025, the Fusaka upgrade follows an aggressive roadmap including July Devnet-3 and September–October public testnets. Key enhancements include PeerDAS for data availability sampling, spam resistance checks, modular exponentiation limits with gas cost adjustments, and higher default block gas limits rising from 45 million to 150 million units. EIPs for proposer lookahead, blob fee bounds, RLP block size caps, CLZ opcode, and secp256r1 precompile further improve efficiency and security.
The Ethereum Fusaka Fork maintains full compatibility with existing smart contracts, ensuring DApps require no changes. By focusing on backend performance ahead of the Devconnect Buenos Aires conference, this upgrade reinforces Ethereum’s iterative development ethos. Traders can expect smoother transaction flows and more predictable gas fees as the Fusaka upgrade streamlines core protocol operations without disrupting the user experience.
Neutral
The Ethereum Fusaka Fork is a protocol-level maintenance upgrade that enhances scalability, node resilience, and efficiency without introducing user-facing features. As a result, it is unlikely to trigger significant market movements or speculative trading in the short term. Past infrastructure-focused forks, such as Pectra, have yielded neutral market responses, with only modest upticks in network usage rather than price surges. In the long term, improved throughput and more predictable gas fees may support broader adoption and bolster positive sentiment, offering gentle bullish undercurrents. Overall, the Fusaka upgrade is expected to stabilize and streamline network operations, maintaining a neutral market impact.