https://ethereum.org/en/eth2/"
Phase 1.5: mainnet becomes a shardExpected: 2021
Up until Phase 1.5, the Ethereum we use today on mainnet will continue as a proof-of-work blockchain. Transactions will continue to be processed by miners. But in Phase 1.5, mainnet will officially become a shard and transition to proof-of-stake.
For end users and dapps, this change should be seamless."
There is a very good opinion on this: do not burden your head with unnecessary questions and mine Ethereum while it is profitable. There will still be a lot of controversy about phases 1.5 and 2.0, I think that another 1 year will not worry.