Since Android 9 (SDK28) Google stopped incremental builds.
I could not find the article (might have been a page that Google changed/deleted/updated).
I may have missed bringing back incremental builds. 🙃

Starting from SDK 28, each new API/SDK level would be a new release level.
Until 12L 🙃

The build branch was updated to 12.1 when 12L was released but..

Platform codenames, versions, API levels, and NDK releases - source.android - has been updated a few times.
When I started on 12L builds, it was not listed. Then it was listed as Android 12L when release.
Now listed as version 12.1

Android 12 (31) and 12L (32) still share the 12 release tag.
12L still shows (May 2022 factory Pixel releases) as 12, not 12.1 or 12L

I am not sure how to name it. 🤔
Stay with 12 and 12L or switch to 12.0 and 12.1

Cheers all. 🤠

I am wondering if I can use this now?

Yes, via test builds posted at https://forum.xda-developers.com/t/gapps-daily-open-gapps-for-android-all-android-versions-devices.3098071/post-86595145

Thanks for your PR!

@nezorflame would the updated naming scheme with 12 and 12L work well with our website API for downloads?

Thanks, I'll check this.