This is the last major release of the 2.x development cycle (there will still be bugfix releases on the 2.7.x branch, if needed). The next release is going to be 3.0.

This is a stabilization release, with no major new features to highlight.

See http://www.xwiki.org/xwiki/bin/ReleaseNotes/ReleaseNotesXWikiEnterprise27 for more details.