Microsoft are to launch their new mobile platform known as Windows Phone 7 at 14:30 today. Most people already know what to expect in terms of operating system but the new phones by various manufacturers should make for an interesting launch. As always, Engadget will be hosting a live blog for the launch so head over there if you want to see how it goes. In-case you didn’t already know, the 2 people launching the platform on stage will be Microsoft’s famous Steve Ballmer and AT&Ts (American mobile provider) Ralph de la Vega.