As we approach the Liberty-1 milestone, we are applying the changes to server versions discussed at the summit and on the mailing list [1][2]. The tl;dr version is that we are switching from date-based versioning to SemVer (semantic versioning [3]). This will result in version numbers appearing to go backwards. Distros will correct this by incrementing the "epoch" field of the version number, which is normally invisible. Anyone doing CI/CD from packages they build themselves may need to take similar action before/after this change to ensure that upgrades occur smoothly. If you want to monitor the patch for your favorite project to know when the change will happen, they are all set up in a gerrit topic "semver-releases" [4] to make them easy to find. Please reply to the thread on the -dev mailing list with any questions to keep the discussion in one place. Doug [1] http://lists.openstack.org/pipermail/openstack-dev/2015-May/065211.html [2] http://lists.openstack.org/pipermail/openstack-dev/2015-June/thread.html#65278 [3] http://docs.openstack.org/developer/pbr/semver.html [4] https://review.openstack.org/#/q/topic:semver-releases,n,z