Here are the main issues who are fixed :

  • Data fields do not always refresh after performing a contact lookup. This causes data to be saved incorrectly when moving through contacts.
  • File Synchronization Performance (Provide an 83% file sync performance enhancement)
  • Synchronization Time-out occurs if Subscription list has been modifiedRestoring a Sync Remote database does not properly set the SQL Server Database Options
You'll be able to download this hotfix and find all the fixes here