Diabloii.net reports to have acquired a Blizzard Worldwide Invitationals (WWI) event schedule where a press conference is set to happen between 11:45am and 1pm.  Diabloii.net suspects this might be a good indication that a game announcement could be made.  This is still speculation at this point and there is no confirmation that a game announcement will be made at all, but this sounds sooooo good!