This update should be merged to quarterly (bugfixes).
Additionally, it appears 2.7.15 includes at least two security (CVE) fixes (see bug 226135 comment 33). If so, a vuxml entry is also required.
I couldn't find published release notes for this version yet.
Was supposed to post comment 0 at bug 228028
*** This bug has been marked as a duplicate of bug 228028 ***