While Red Hat and several other Linux vendors have either deprecated Btrfs support or at least not embraced it like they originally talked up this "next-gen file-system" years ago, SUSE has continued supporting Btrfs both with openSUSE and SUSE Linux Enterprise.
SUSE continues shipping openSUSE/SLE with Btrfs on the root file-system and through that have been offering up some nifty features, including support for transactional updates.
