The Quarkus team releases a major.minor version every 4 to 6 weeks, and a fix version targeting the latest version every week in between. Every major.minor version deprecates the previous version and there is no LTS versions. See Quarkus Roadmap/planning for upcoming releases and features.

If you need additional guarantees you can take a look at the Red Hat build of Quarkus (RHBQ). The code base used for this build is the same as the one used for the community version, but it comes with support, a slower release cadence, and certified builds of Quarkus and its dependencies. The Red Hat build of Quarkus requires a Red Hat subscription to run in production.