Yes, you brits got lucky with that threatened Royal Mail strike. PC World, and some other chain store owned by the same corporate "overlord" decided to ship copies out early in advance of the potential strike, which takes place starting today isn't it? We yanks have to wait a couple extra days.
Much to my surprise my pre-order copy of windows 7 Home Premium was delivered on 19 October, 3 days early.
I had to do a clean install because I had Windows 7 RC Ultimate installed prevously.
It installed without any problems at all. The file Windows Old is there as it was in RC so you can recover your favourite etc. after a clean install, as you could in RC.
All my old programs work, in comaptibility mode where necessary.
All the remaining bugs I had found in RC were fixed.
It's faster than Vista and better than XP.