In honor of "Where's the Beef", there is no info about this and you can't try it. Buried on an MSDN page is a signup form for a "limited number" or beta slots.

In honor of "Where's the Beef", there is no info about this and you can't try it. Buried on an MSDN page is a signup form for a "limited number" or beta slots. I classify this announcement as: currently vaporware.