This was certainly the vision of Windows 10, right? Not having a "Mobile" line or a "Desktop" line - but just having a single operating system that spanned all devices. Metro / Modern design lends itself to routinely responsive layouts, and the Continuum effort bridged the gap across peripherals. It's a no-brainer that, soon, we're going to see this arrive. Microsoft Andromeda supposedly addresses this need with a product line that is a "small tablet that can make phone calls," essentially, a Windows Phone.