This momentum may continue through the end of the year, when PC sales are traditionally high. If it does, it will be interesting to see where most of the users are coming from -- be it upgrades from XP, Vista, or new machines. Regardless, the message is clear: Windows 7 is growing at an astounding rate.
A report earlier in the month indicated that Windows 7 was selling significantly better than Vista in retail, which was undoubtedly affected by pre-order discounts. It is possible that as pricing returns to normal, retail sales could decline. That point may be moot, however -- it is safe to say that from this point onward, Vista sales will come to a halt.