Indeed. And made lots and lots of mad customers (I am dealing with them daily).
I know that VIsta is basically W7 under the hood with some serious fixes.
I am not saying that W8 is a flop systemwise. It is what is over the hood that will make it flop. Vista was a systemwise flop, something people could not see. But were disappointed with the instability afterwards, something you didn't see as you probably don't face hundreds of private customers buying laptops and PCs with Vista.
W8 will suffer the other flop, and that is that people will not convert to W8 being on W7. Not to mention the awful Metro.
The only way people are going to be forced to buy W8 is via buying hardware with preinstalled windows. And our hardware sales are going to drop, that I predict. And not only ours.
Yes, it is also something I noticed. It must be a business plan, to push the sales of upcoming OS. See MacOSx, they barely have these problems, they never have "bad" OS... yet, their sales are not as nearly as high as Microsoft's.