SilverStripe 3.1.7-rc1 (release candidate 1) is now available, and all users of 3.1.6 or below are advised to be prepared for stable release.
Release notes: http://doc.silverstripe.org/framework/en/3.1/changelogs/rc/3.1.7-rc1
Download: http://www.silverstripe.org/software/download/#download-releases