Cardano released an announcement on July 1 to update the mainnet rollout process. The announcement shows that Cardano has moved from the "Byron" testnet to "Shelley."
The team said: "We have successfully run node v 1.14.2 on the Shelley public beta network for more than a week. We deploy new nodes on the Cardano mainnet (Shelley) on June 30." Cardano will conduct a hard fork of Shelley on July 29.