Not happening–since there’s not enough interest in Windows Phone itself there’s not going to be support added for it specifically, and in case you haven’t seen the article here: http://www.theguardian.com/technology/2016/mar/04/microsoft-monopolise-pc-games-development-epic-games-gears-of-war
Basically the Universal Windows Platform option isn’t going to happen either because of restrictions of UWP apps.