According to ChainCatcher and Cointelegraph, Tomasz Kajetan Stańczak, the joint executive director of ETH, revealed that the Fusaka hard fork upgrade is planned for the third or fourth quarter of 2025, with the specific timing not yet finalized. Core developer Tim Beiko stated that due to technical uncertainties that may affect the upgrade progress, the controversial EVM object format (EOF) upgrade has been removed from Fusaka.
EOF was originally planned to comprehensively reform smart contract development through 12 EIP proposals, including introducing the RJUMP instruction to replace traditional JUMP and adopting optimized solutions like structured bytecode containers. Supporters believe this will enhance EVM efficiency, while opponents argue that it overly complicates the system and requires synchronous updates to the development toolchain. A poll on the ETH voting platform ETHPulse showed that 39 addresses holding 17,745 ETH oppose the upgrade.
