After the positive outcome on the ARFC Snapshot, and following the governance procedures, we have created a on-chain AIP for this second distribution for aAMPL holders, denominated in aUSDC (USDC on Aave v3), following the recommendations of finance service providers.
It is possible for users to check in advance in the document HERE, and similar as with the initial distribution, we will share the Merkle link to claim once the proposal gets executed.
Voting will start in approximately 24hours, participate 
https://vote.onaave.com/proposal/?proposalId=93