Anbox Cloud currently officially supports only the most recent release. Older releases are only supported for a short time after a new minor release was published.
To ensure you receive latest security updates and bug fixes you should upgrade to a new release of Anbox Cloud shortly after it was released.
Current Release: 1.9
Next Release: 1.10 (scheduled for April 2021)
See the Anbox Cloud Roadmap for details on the exact schedule of upcoming Anbox Cloud versions.
If you are looking for additional support, find out about Ubuntu Advantage.
Canonical can also provide managed solutions for Anbox Cloud.