Linus noted in the 4.7-rc3 announcement, "Nothing particularly odd has been going on. As promised, rc3 has the fix for the NFS issue that was pending last rc. Not that anybody seems to have noticed (also as expected). The diffstat looks fairly normal and innocuous. There's more of a filesystem component to it than usual, but that's mostly some added new btrfs tests, and if you ignore that part it's all the normal stuff: drivers dominate (gpu and networking drivers are the bulk, but there's i2c, rdma, ...) with some arch updates, and general networking code. And the usual random stuff all over."
For those slacking on your daily reading of Phoronix, we have been covering Linux 4.7 at length and its many new features and benchmarks (as well as via LinuxBenchmarking.com).
Linux 4.7 should be officially released in about five weeks.