Presently, there is over 3 million ether valued at around $5.3 B in the Ethereum 2.0 staking contract.
The goal of Ethereum 2.0 is to switch from the Proof of Work mechanism to the Proof of Stake. The aim is to build a distributed consensus. To be a validator of the network, users need to stake their ETH. The changes will bring many benefits like lower hardware costs and shard chains.Every user is allowed to stake Ether to get rewards of about 23%. Depositors will be able to withdraw their rewards only when Phase 1.5 of Eth2 goes live - planned for 2022.