[candl]

Why? There is a Manifest file where you specify the features your application is using. I would imagine that if you leave out the new, hardware dependent stuff it should run just fine? You can do something similar already by opting out from supporting phones with constrained RAM. Those applications are then made unavailable to certain devices in the marketplace. I admit that there has been no mention of this how it's supposed to look like with regards to WP 7.8/8 so it needs some clarification.