Countdown to Fusaka: Ethereum Locks Dates for Holesky, Sepolia & Hoodi Forks

Ethereum developers have set October 2025 dates for the Fusaka upgrade's forks on the Holesky, Sepolia and Hoodi testnets, with mainnet activation planned no earlier than 30 days after Hoodi. The schedule starts with Holesky on October 2, 2025, followed by Sepolia on October 16, 2025, and Hoodi on October 30, 2025. Barnabas, a core contributor, recommended scheduling all forks on Wednesdays to provide debugging windows and avoid clashes with the All Core Developers calls.