Currently working on versions of our Moodle Mobile apps for our users with Windows 8 and Windows 8 Phone.
The Moodle Mobile Team at Moodle HQ will supervise development and integration, but the Windows-specific development will be undertaken by CV&A Consulting (our Moodle Partner in Barcelona, Spain).
CV&A Consulting will cooperate with Microsoft to ensure the highest quality of the resulting apps. The first releases of the Windows versions are expected by early September.
If you're interested in learning more about our apps:
Release Notes: http://docs.moodle.org/dev/Moodle_Mobile_Release_Notes
Developer documentation: http://docs.moodle.org/dev/Moodle_Mobile
Bugs and feature requests: https://tracker.moodle.org/browse/MOBILE