This release has (as compared to beta 1) no technical changes that should affect users. Changes between the beta and this one are internal only – like code refactoring/cleanup, some very small GUI fixes etc.
However note that the full-featured "MONyog" (as you know it) was was renamed to "MONyog Ultimate". Full details will be available with the upcoming GA release. A new licensing scheme is planned from 3.7 GA. But note: this will not affect existing users.
Downloads: http://webyog.com/en/downloads.php
Purchase: http://webyog.com/en/buy.php