On the plus side, MS did consumers a solid by making the upgrade cheaper than any previous version.
On the negative side, barring integration with touch screen enabled PCs/tablets, there's not much of a clear incentive for the average user or business to upgrade from Win 7.
I ran the pre-release candidate and other than the wall of tiles that replaced the Start Menu, I was unable to find any advantages that would make it worth my (at the time) presumed $130 upgrade since I don't have a touch screen desktop, laptop or Windows tablet PC.
Even at a very reasonable $70, I just don't see the point in upgrading until I have to due to dropped support for Win 7 or I buy a new PC with touch screen capabilities.
So, like many others apparently, if the alleged slow sales are confirmed, I won't be upgrading to Win 8 unless it comes installed on a new PC that I buy.
I suspect a significant number of Win 8 copies sold were pre-installed on new devices.
