Google will now only release Android source code twice a year (Android Authority)
Android Authority https://www.androidauthority.com/aosp-source-code-schedule-3630018/
that Google will be reducing the frequency of releases of code to the
Android Open Source Project to only twice per year.
A spokesperson for Google offered some additional context on this
decision, stating that it helps simplify development, eliminates
the complexity of managing multiple code branches, and allows them
to deliver more stable and secure code to Android platform
developers. The spokesperson also reiterated that Google's
commitment to AOSP is unchanged and that this new release schedule
helps the company build a more robust and secure foundation for the
Android ecosystem.
The release schedule for security patches is unchanged.