This release adds three major features, import hashes from many file types via *2john conversion, support for Jumbo specific attack modes and Passwords table export to CSV and PASSWD format.
The UI has seen further improvements in usability and consistency terms. Smaller fixes and adjustments are included, for a complete list of changes see the CHANGELOG entry for v2.2:
https://github.com/shinnok/johnny/blob/v2.2/CHANGELOG
NB: This release is the last one as part of GSoC 2015 iteration and thus marks the successful end of the fruitful collaboration and efforts of Mathieu Laprise. Thanks again Mathieu for taking Johnny further and contributing to the Open Source and security community!
For binary redistributables and more info regarding Johnny see this wiki page:
http://openwall.info/wiki/john/johnny