Dear roaring IOTlers,
we've finally merged all remaining PRs that were missing for our upcoming release and are now in final testing phase. Therefore, I created a release branch  as well as a tag for the first release candidate . Everybody is invited to help testing and finding potential last bugs, before we can finally publish the 2015.09 release this week.
 https://github.com/RIOT-OS/RIOT/tree/2015.09-branch  https://github.com/RIOT-OS/RIOT/releases/tag/2015.09-RC1