#ETHBreaks2k However, to ensure a smooth transition to the mainnet, the Ethereum research team will release new updates for the client software and a hard fork that has been tested on the testnets Sepolia and Holesky in February. A temporary testnet named Mekong, launched in November 2024, will also be used to test important features for Pectra. If these testnets proceed smoothly, deployment on the mainnet will take place in March.