As a computer guy I will not jump on the Vista v. other OS stuff. But I will agree that Win7 is going to be a nice update to the Windows OS line (even though I enjoy Vista). There are going to be a few versions, as Vista had, but a couple are not going to be sold in the US or other major countries. They have two that are aimed at low cost for developing nations, and another for a specific version. So while I can say there are six or seven Win7 being produced, only four or five will be in the states.
*Note: Not counting the thousand different illegal versions.