...
In order to regularly deliver value to our users, we plan to deliver increments of a major release regularly. The point in time is flexible and depending on the importance of features added or bugs being fixed. We plan to release these beta releases (see Release planningtypes) at max every 3 month. As soon as we think that the number the beta version of a logical major version add enough features and address the epic features initially planned for the release, we release a major version as GA (general availability) release.
...
When releasing a version, the most important information is whether this is a beta release or the final (major) release of this major version (see Release planningtypes).
Releasing a beta version
...