Ethereum Developers Target January for First Testnet Deployment of Next Big Upgrade, 'Dencun'

Developers also discussed a draft timeline for the Dencun testing upgrade, aiming to run through another test network, Sepolia, on Jan. 31, the Holesky testnet on Feb. 7, and then proceeding to deploy the changes on mainnet around the end of February. These dates could change depending on the outcome of the testnet forks, they cautioned.