Comcast just announced that its Xfinity TV app is now available for Android 3.0-powered tablets such as Motorola's Xoom. The free app allows Comcast cable subscribers to browse TV listings by area and browse On Demand libraries as well as search either database. The Xoom is guaranteed to support the app, but other Android 3.1 tablets with a 1280x800 resolution should also support the new app.