For the last few months, it's almost become a habit of mine to make the occasional release from the airport while flying out somewhere. And this is another such one. Go free PDX airport wireless!
Anyway, it's been roughly a week, and -rc2 is out. The most noticeable thing tends to be fixing various fallout issues - there's lots of patches to finish up (and fix the fallout) from the UAPI include file reorganization, for example, but there's also some changes to how module signing is done etc etc.
In pure lines, the uapi stuff (even with rename detection) dwarfs everything else, and the diffstat of -rc2 is very unusual. Instead of the normal "65% drivers, random everything else", it's "50% arch patches (largely uapi header files), 30% include (more uapi header file changes, and 20% everything else".
But the appended shortlog is fairly readable, because the uapi changes don't dominate there. Nothing really particular stands out. DRM and USB driver changes, and various random fixes all over..