The official announcement of Linux 3.13-rc5 has yet to be issued, but the tag is there. This late in the release cycle, the changes come down to bug/regression fixes. Compared to the prior week when Linus Torvalds was upset with still having big changes, things appear to be more subtle this week but we'll wait for Torvalds' official release announcement.
The Linux 3.13 final kernel should be released in a few weeks time. If you're not familiar with the new features being brought to the Linux 3.13 kernel, read this article for an overview.