There will be a 3-day deprecation period starting on April 24th. More information about this can be found in the linked posts.
The airdrop considers addresses that participated in protocols from January 1st, 2021 to February 28th, 2021. Qualifying criteria were mainly economic, with an additional bonus to addresses that are both economically active and participate in governance.
More information about the selection process and the exact protocols supported can be found here: