Wp8 no longer requires Silverlight (an unfortunate reality for wp7 though.) WP8 supports C and C++, so if an app is developed for both Android and iOS, it really should be a pretty straightforward port. I'm hoping Microsoft is sweetening the deal for waze. Having been a fan of Waze for years, and having met some of the leadership team, I really hope they'll support wp8 soon! LA traffic is too bad to live without it. It helped me save 15-20 mins every day, which is more time to spend with my baby girl. Do you really want to have that "blood" on your hands, Waze?