On April 29, Ethereum co-executive director Tomasz Kajetan Stańczak revealed that the Fusaka hard fork upgrade is planned to be implemented in the third or fourth quarter of 2025, and the specific time has not been finalized. Core developer Tim Beiko said the controversial EVM Object Format (EOF) upgrade has been removed from Fusaka due to technical uncertainty that could affect the upgrade progress.

EOF originally planned to comprehensively reform the smart contract development method through 12 EIP proposals, including the introduction of RJUMP instructions to replace traditional JUMP and the adoption of structured bytecode containers and other optimization solutions. Supporters believe this will improve EVM efficiency, but opponents point out that it overcomplicates the system and requires synchronous updates to the development toolchain. A poll on Ethereum voting platform ETHPulse shows 39 addresses holding 17,745 ETHs opposed the escalation.