If M$ is really THAT worried, they should have taken some actions to improve Win8 ASAP already, not just continuing their marketing spree.
Especially for the older computers, XP users would want compatibility, low resource consumption and ease of use, so that way they won't need to bother upgrading both OS and hardware at the same time.
Windows 8? LOL. I mean, worse than 7, good for touchpad and bad for mouse and keyboard. No wonder M$ moans about, dev teams nowadays just can't get what users want.