Mass confusion
So there's Windows 8 Phone, Windows 8 RT which is for ARM tablets, Windows 8 Home which is for home PCs and Windows 8 Pro which is for business PCs?
I'm confused already, there's too much stuff called: "Windows 8".
So what will happen is someone will walk into the IT dept. with their Windows 8 phone or RT device and wonder why you can't install Office 2010 or whatever onto it, I can see it now.
Which will annoy IT people and cause "no Windows 8" policies to be adopted.