@DeathByVisualStudio: It's a fair point, though given that phone 7 runs apps fullscreen and only while in the foreground it's kinda hard to see how some possible future version would break that experience. Doubly so given that the WinRT model that exists today is essentially restricted in the same way.

It might not "light up" as well on future devices, but the same was true of iPhone apps when the iPad came out and that was from Apple, who have hardly a long history of worrying too much about breaking backcompat or annoying devs.