Ethereum is set to implement the Fusaka hard fork at the end of 2025, eliminating the EOF upgrade
Ethereum plans to implement the Fusaka hard fork by the end of 2025, focusing on enhancing the performance and scalability of the network. A notable point is the plan to completely eliminate the EVM Object Format (EOF) – an upgrade that was once expected to improve the way smart contracts are stored and executed.
EOF includes 12 EIP proposals (such as EIP-3540, EIP-4200, EIP-4750…), aimed at redesigning the bytecode structure, introducing new instructions, and eliminating the ability for dynamic jumps in smart contracts. The goal is to increase safety, ease of auditing, and optimize EVM performance.
However, many developers, particularly from the Vyper group and libraries like OpenZeppelin, warn that implementing EOF right now could break backward compatibility, posing significant risks to the entire dApp ecosystem. An internal survey also showed that many large holders oppose this plan.
In response to pressure from the community, Ethereum decided to remove EOF from the Fusaka hard fork, instead focusing on less risky upgrades like PeerDAS (improving data distribution) and raising the gas limit to 150 million to enhance scalability.
Fusaka is expected to be implemented in Q3 or Q4 of 2025. This decision indicates that Ethereum prioritizes stability and listens to the community rather than pushing for technical changes that could disrupt the ecosystem.
