Versions and releases

A version is just a milestone on the head branch made publicly available.

For each stable version, a maintenance branch is forked from the head branch (e.g. 3.2 MAINTENANCE).

On the head branch and on each maintenance branch, maintenance releases are regularly issued.


A version can be either in:

Version Maintenance phase Maintenance end date
2.4, 2.5, 2.6.x, 2.7.0 and 3.0 n/a Expired
3.1 release notes Long term December 2018
3.2 release notes Long term June 2020
4.0 release notes Current Not yet defined

Note: The maintenance end date is be defined as date of the initial maintenance release of next version plus 3 years.