Have a Windows Phone and crave access to BlackBerry's famed messaging app? Today's your lucky day. Announced in a video posted today, BBM is now exiting beta to become available for download in the Windows Phone store. The company said it spent considerable time tweaking the app's interface to fit with Microsoft's mobile OS, and the result is a clean UI that looks considerably different than the versions you'll see on iOS and Android (not to mention BlackBerry OS 10). BBM for Windows consists of three main screens -- chats, feeds and contacts -- and you'll have the ability to pin a chat right to your phone's start screen. Windows Phone users who are new to BBM can pick up a few tips on getting started via the video (posted below). As of this posting, the app wasn't yet live in the Windows Phone store, but the rollout should begin shortly.