This version is a minor release with a new option allowing you to change the location of the Atlantis user files.
By default, user-specific files of Atlantis (document templates, backup files, spellcheck lexicons, etc) are stored under the "My documents\Atlantis" folder. Now you can choose a different location for these files by clicking the "Browse..." button next to the "User files location" edit box on the "Load/Save" tab of the "Tools | Options..." dialog:
You would have a choice to copy current user files to a new location, move them to the new location, or ignore them altogether and use any files available at the new location.
See more release notes.