Today at D9, Microsoft opened up about Windows 8 with a bang. Not only does does Microsoft FINALLY have a viable operating system for tablets/slates, but they also announced that the gorgeous new Windows Phone 7/Xbox 360 UI will heavily leverage HTML 5 and Javascript. This really comes as no surprise since IE9 has hardware acceleration and can push beatuful HTML 5 graphics just like a desktop application. To coincide with this, Microsoft has also announced that their wildly popular Professional Developer’s Conference (PDC) will now be rebranded to Build. The new UI looks absolutely gorgeous and I can’t wait to play with it live on a tablet. Take a look at the video to see it in action: