Microsoft's announced it'll release an Xbox Companion app for Windows Phone 7 handsets tomorrow alongside the launch of the Next Xbox Dashboard.
The app will contain Bing, enabling you to search for content that's available on XBLMP.
Through that, you'll get to "launch a movie, TV show, game or app on the connected console as well as play, pause, fw, rw the playing video or music on the connected Xbox, initiate media purchase and navigate your Xbox console."
It'll also come with the abilities to check Friend activity, Achievements, see what you played recently and more.
Get our preview of the new dashboard here.