Windows Phone 7 was a product that would be perpetually evaluated, tweaked and overhauled as time went on, and sure enough, we're already seeing those winds of change blow yonder. Reportedly, Microsoft has now removed the restriction that prevented developers from writing applications that would continue to operate behind a locked screen (without a user's explicit permission, anyway), enabling a whole host of apps to breathe in a manner in which they simply should. Audio apps, for example, will now be able to run in the background without yet another layer of pointless Vista-esque permissions, and Microsoft's Charlie Kindel said in an interview at its Professional Developer Conference that this move "is an example of us continuing to listen to customers." Frankly, it's just more fair -- Microsoft's own ingrained applications could already do this sans user permission (email, Zune playback, downloads, etc.), so it makes sense to give loyal developers that same opportunity. Of course, devs will have to prove that background apps won't burn up an absurd amount of battery life, but that's definitely not an unexpected qualification.