Ethereum Mainnet Merge clients have launched mandatory updates for nodes.
Teku v22.8.1 is now available, and it’s a mandatory update that includes a network upgrade and merge transition configuration for the Bellatrix system. All Mainnet users must upgrade before September 6.
Lighthouse, the Ethereum consensus client, stated that all Ethereum mainnet users must have to upgrade in order to stay connected with the canonical chain.
Furthermore, Geth just released Geth v1.10.22 (Promavess), their first mainnet-merge release. The Ethereum Merge will require both an execution client and a consensus client.