The big story is not the new start screen or even WP8. It's whether WP7.x users can download and install new apps. Can a non-native C# app that does not use any

The big story is not the new start screen or even WP8. It's whether WP7.x users can download and install new apps. Can a non-native C# app that does not use any WP8 hardware features compiled for WP8 run on WP7.8? MS needs to clarify. If not, MS just screwed all their existing WP7 users and have effectively killed off all new sales of WP7 devices. Developers will continue to develop WP7 apps and any benefits to switching to WP8 for development are moot. More alarmingly, if they did this for WM6.5 and WP7 within such a short time frame, how can any customer feel safe in buying a WP8 device? What happens when WP9 gets released? Why would anyone buy a WP now? My iPhone 3GS may not support FaceTime, Siri or Notification Center, but at least I can download new iOS 5 apps from the App Store.