This is a minor release that addresses some display issues in the latest versions of Word 365, especially for users with high resolution monitors.
Microsoft are pushing new releases of Office 365 regularly now, and one of the focuses of these releases is improving Word for high DPI screens. This has a knock on effect on add-ins like SmartEdit.
Up to now I’ve been jury-rigging solutions for high res monitors, but with the Word improvements SmartEdit is now able to handle these screens better.
If you don’t use the latest Word 365 or have a high res monitor, there’s no benefit in downloading this new version.