Except, of course, for how every Win8 Surface tablet available today won't, oh, do things like run Windows software. And how all the WinPhone 7.x devices are falling by the wayside. And how all those Win7 licenses MS is so proud of having sold you won't run any of the WinRT apps.
Not sure "unified" means what you think it does. HTML5, once the vendors get past trying to stall the key standards - now THAT will be a unified experience.
Keep Up with TechRepublic