The Altair council has proposed a motion for opening the first pool on Altair. You can read @Esther’s announcement here, with more information about the pool.
Note that this is a test pool - not open to the public. The purpose of the pool is to make sure that everything runs as expected, and fix any bugs that may arise, before making the pool public and eventually launching them on Centrifuge Chain.
The motion has been created with the preimage hash:
0x93c80ace8ffec92514f00061fb3b35a7e67514b7e9b80eb8dc31e9dcffe290b2
See the motion in the portal here (while it is open).
See the motion on Subscan here.
It will be followed by another motion to fast-track the proposal so it will be enacted shortly after the referendum vote ends.
Once the motion to fast-track the proposal has passed, the proposal will become a referendum, that all token holders can vote on, using their AIR tokens. The referendum will be open for people to vote on for 5400 blocks (~1 day with an average block time of 16 seconds).
Remember, that you don’t lose your AIR by voting on referenda - they are just locked for the duration of the vote. After that, they will be available for transfer again. You can make your vote count for more by voting with conviction which means that you can vote with up to 6X the amount of tokens you have, by locking them for a longer period of time.
If you want to know how voting with conviction works, you can see a short explanation in this post.