Ethereum’s official website says Shanghai could go live during the first half of 2023. Some experts believe the upgrade could activate as early as US tax day: April 15.

Ethereum’s Shanghai upgrade differentiates staking rewards from the original 32 ETH minimum required to activate Proof-of-Stake validator keys. In short, validators’ rewards are far easier and faster to withdraw than the larger 32 ETH sum from activating the validator activation. Full withdrawals of both rewards and the original 32 ETH will take over 18 months to complete in full.

The post-Shanghai system will allow approximately 1,800 validators per day to make a full withdrawal of their original deposit plus rewards. This feature will cleverly limit the amount of ETH withdrawn daily.

Ethereum gives no technical reason for its arbitrary selection of 1,800; the quota is simply eight full withdrawals per epoch and is intended to limit ETH sell pressure.