Microsoft is licensing its Age of Empires IP to KLab Inc. for development of a mobile entry in the franchise for mobile platforms.  From the sounds of things, the game will be coming to iOS and Android first with a Windows Phone version coming at a later time.  The game is being developed in English first with a global release planned and other languages as well as the Windows Phone version planned for a future release.

There was speculation of other Microsoft franchises planned to be released on mobile platforms, but Microsoft refuted those rumors with the vague “there are no further announcements beyond Age of Empires at this time.”

Source:  Polygon