PANews reported on April 29 that according to Cointelegraph, Ethereum co-executive director Tomasz Kajetan Stańczak revealed on social media that the Fusaka hard fork upgrade is scheduled to be implemented in the third or fourth quarter of 2025, and the specific time has not yet been finalized. Core developer Tim Beiko announced on the same day that the controversial EVM object format (EOF) upgrade has been removed from Fusaka due to technical uncertainties that may affect the progress of the upgrade.

EOF originally planned to comprehensively reform the way smart contracts are developed through 12 EIP proposals, including introducing RJUMP instructions to replace traditional JUMP and adopting structured bytecode containers and other optimization solutions. Supporters believe that this will improve the efficiency of EVM, but opponents point out that it over-complicates the system and requires synchronous updates to the development tool chain. A special poll on the Ethereum voting platform ETHPulse showed that 39 addresses holding 17,745 ETH opposed the upgrade.