I have downloaded the RTM Windows 8 bits from my technet account and installed them on a laptop that I use to do testing. I must say that I am actually, so far, somewhat impressed. I have not played with it for long so I still have a lot of things to do before I give it a a thumbs up or down but compared to the CTP release that I installed last, they did some good things.
I am still getting used to it and I am attempting to keep an open mind about the Metro interface. I am not sure that I will ever fully come around to it, especially since, as an IT Profesional, most of the apps that I am going to be using are not written to be Metro Apps and they will have to switch out of Metro and into the Windows 7 style desktop in order to run anyhow. So I think that for me and others like me, we just need to change to always run with the Windows 7 style desktop. I have not figured that out as of yet but I will. For standard users, the Metro interface is actually very nice. It will take some getting use to but I actually like it way more than I thought I would. I can definatly see the appeal of this for tablets, phone and even the XBOX. I have to give MS some props on this as I thought I would hate it through and through. I will be playing with it more and installing some more things on it to see what it can do and I will let you know.