Lots of tiny fixes here. I think the biggest (in lines) change is the fixup of the kmsg_dump() functionality that got broken due to the new record-oriented kernel message stuff. And even that really isn't all that big. The other one that stands out in pure number of lines is the XFS 'struct log' rename patch (which also did a couple of trivial whitespace changes).
So while we still have 200+ commits in this -rc, they really are all pretty tiny and insignificant. Sure, if the particular issue they fixed hit you (or you are the developer of those life-changing lines ;), you may disagree with the "insignificant" part, but to me, this is just how I like the -rc's at this point.