Game Keys

Hello,

I have some questions regarding the "Meta Keys" distribution option:

1. How long do keys last for? Can they be infinite?
2. When a user has gained access to the app with a key, do they always stay updated to the latest build on the production channel?
3. For a keys-only app, is it possible to push minor updates without needing the app to be reviewed each time?
4. Is it possible to see which Meta account redeemed which key?
5. Is it possible to revoke a key?

Thank you so much for your help!