We've been covering the Linux 3.15 kernel changes already in great detail across dozens of Phoronix articles in recent weeks and detailing the play-by-play of the merges for this next major kernel update. With two weeks having passed since Linux 3.14 was released, the 3.15-rc1 was released this Sunday afternoon. It's about time as the merge window was particularly heavy but very exciting.
There were many changes with the Linux 3.15 kernel from initial but rudimentary NVIDIA Maxwell GPU support, AMD VCE support, better Intel Broadwell support, EFI mixed mode support, and a multitude of other changes as outlined earlier this weekend within The Linux 3.15 Kernel Is Going To Have A Lot Of Great Features. Be sure to read up on all the exciting stuff!
Linus, while brief on exhaustively covering the major new features within his mailing list announcement, acknowledged the massive churn with Linux 3.15. Torvalds noted, "This release doesn't really have a lot of odd things going on, but it's *big*...3.15-rc1 is just big in general. No single big thing, but just lots and lots of commits. Sure, it has a few big new staging drivers (rtl8723au in particular), but even when big, those aren't nearly the bulk of things. There's just a lot going on. In fact, we have the biggest number of commits in recent history (maybe ever), at just over 12000 non-merge commits (and about 800 merges)." With the Linux 3.15-rc1 release being so huge, Torvalds isn't planning to accept any late pull requests. Now it's onto bug-fixing for this release that will be stabilized over about the next two months. Many Phoronix benchmarks of the Linux 3.15 kernel are forthcoming.
As of Linux 3.15-rc1, the codename remains that of Linux 3.14, the "Shuffling Zombie Juror" release.