The Btrfs changes intended by Chris for the Linux 3.17 kernel are mostly "fixes and cleanups" according to the Btrfs creator on the mailing list. In total though there's 92 commits that add over one thousand lines of code to the Btrfs file-system code-base. However, there doesn't appear to be any exciting new end-user features or additions.
While the Linux 3.17 merge window is expected to remain open for a few more days prior to the 3.17-rc1 release, Linus Torvalds isn't planning to pull these changes for Linux 3.17. Torvalds was quick to say to Chris, "Yeah, I think this will be for the next merge window. This clearly got rebased today. At the end of the merge window. After I told people that I was traveling, and asked people to send big things early. So please re-send this for 3.18, and send just stable fixes for this release."
Linus Torvalds is traveling coming up for LinuxCon and the other events happening next week in Chicago, which will be covered on Phoronix.