This one ended up to be a release with lots of small corrections and improvements without big uncomfortably exciting features. It is a lot smaller release than other recent feature releases, consisting of 255 non-merge commits (version 2.0, 2.1 and 2.2 had 475, 698 and 556 commits, respectively) by 61 contributors (among which 19 are new people—welcome!).
The recent security fix that went to 2.2.1 and older maintenance tracks is also contained in this update.
One of my favorite small changes in this release is that the "Conflicts:" section that is prepared in the buffer to write your commit log message during a merge is now commented out, just like all the other hints to help you prepare the log message (e.g. the list of files with changes you might want to mention in the log, and the list of untracked files you might have forgot to "git add"). For the full text of the release notes, please visit the list archive.
Enjoy.