Ethereum is a protocol undergoing significant changes. Client teams are upgrading the protocol to scale to meet global demand while improving security and decentralization. Beyond protocol development, a critical shift in Ethereum has been the movement away from ‘Eth1’ and ‘Eth2’ terminology. As of late 2021, core developers stopped using the…

Source and More information: The great renaming: what happened to Eth2?

Author: Ethereum.org