SilverStripe 3.1.13-rc1 (release candidate 1) is now available, and all users of 3.1.12 or below are advised to be prepared for stable release.
This release contains many UX and documentation improvements, as well as bug fixes.
Release and upgrading notes can be found at http://doc.silverstripe.org/en/changelogs/rc/3.1.13-rc1
Download: http://www.silverstripe.org/software/download/#download-releases
Announcement: https://groups.google.com/forum/#!topic/silverstripe-announce/XEuxvaXBWuo