Ethereum developers completed the Fusaka upgrade rollout plan during ACDC 165, with the Holesky testnet scheduled to launch on October 1, Sepolia on October 14, Hoodi on October 28, and the mainnet on December 3. After activation, blob capacity will be expanded in two phases: the first week from 6/9 to 10/15, and the second week to 14/21, to enhance network scalability.