New

• Maintenance Mode
• Audit Logging
• Searching & Filtering Stars
• Contributing Guidelines
• Command Bar
• Launch Page
• New User Profile Page
• OAuth Cloning (built-in authentication only)
• Emoji Autocomplete
• Last Commit Per Directory
• Notifications API
• Close and Merge Notifications

Bugfixes / Enhancements

• Improved code, user, and repository search backend.
• Disabling gravatars now properly affects the contributors graph as well.
• The VM hostname will no longer return to the default of "github-enterprise-11-10" after reboots.
• The ghe-cleanup-repos utility will no longer incorrectly identify gists and wikis as deleted repositories.
• Fixed some truncation issues with really long repository names.
• LDAP connection testing is now available in the Management Console.

Additional information is available here.