This mouse is 100% compatible with Windows 7 and 8. A new version of the Func MS-3 Settings Software is now available and a new firmware version can be downloaded to ensure compatibility. A complete guide to how to upgrade your firmware can be found in this document or this video.
Domestic and international orders will be shipped by Massdrop.
Estimated ship date is January 3, 2014.
After the drop ends, check the discussion page for updates.