Here's the changelog (from the stable v3.7.x):
- Numerous error corrections, especially in maps view, messaging view and in backup&restore.
- Fix for calendar sync issue with S40 phones, when phone and PC is located in timezone, where Daylight Saving Time (DST) is applied in winter (for example Australia).
- Several improvements for content migration to Microsoft SkyDrive. We have fixed several issues related to Microsoft SkyDrive migration, this improves overall reliability of migrating data from Symbian, Meego and S40 phones to Microsoft SkyDrive.
- Several fixes for various crashes.
You can also provide feedback through Nokia Betalabs discussion forums. However, the preferred way of providing feedback is Nokia Suite's own feedback dialog. Instructions for bug reporting can be found here.