Where can I see what is the latest compose file version?

Where can I see what is the latest compose file version? After 10 minutes of Google searching and digging through the docs, all I’m able to find is this list of legacy versions Compose file version 3 reference | Docker Documentation where can I see what is the latest version?

Oddly the 3.9 is not mentioned, that added some windows container specific things (I don’t recall which exactly).

But ultimatly, it doesn’t matter anymore as the latest docker-compose and docker compose cli-plugin versions don’t rely on version anymore - they simply ignore it. They will always use whatever is specified in Compose specification | Docker Documentation.