Refer to the other comment for where it is. The release cycle depends on your distro. If you use arch, you'll always get the latest stuff as it releases. That's the thing that makes arch a good choice for gaming.
Other distros are generally more delayed or only release major versions that don't break anything.
For nvidia this means you have specialized distros created for the sole purpose of having a working nvidia driver that come in different versions because even the 'stable' versions aren't very stable. With AMD, you basically don't need to worry.
Distrobox was made for this exact use case.