We've already seen Tango video calling demonstrated on a Windows Phone Mango handset, and the company has now confirmed that it will indeed be the first video calling service available for the OS. The app is slated to roll out on November 7th, and it will include both some tight integration with the operating system (aided by some input from Microsoft) and hardware acceleration for smoother video calls. It will also apparently come pre-loaded on at least some of the forthcoming Mango-based handsets, although Tango isn't ready to specify exactly which just yet. Natur
