False. PoS Beaconchain is already running, since December 2020, and the merge is expected to happen Q3 2021 or Q1 2022. Sharding is not immediately necessary for Eth2 to scale - we have rollups in the meantime for that.
“Ethereum 2.0 is an upcoming set of upgrades to Ethereum that's intended to make it significantly faster, less expensive, and more scalable. As part of the upgrade, participants may stake ETH tokens to help secure the network. In exchange for staking, participants then receive rewards on their staked ETH. Staked ETH (and rewards) can't be unstaked until Ethereum 2.0 fully launches, which most experts estimate will happen between 2022 and 2024.”
-Coinbase
The merge is expected to happen Q3 2021 or Q1 2022, and the withdrawal/unstake functionality will be implemented afterwards, so most likely 2022.