Susan,
I was over at our Wal-Mart last night and the latest models of the Zune are already on prominent display in Electronics. The new 30GB and 80GB ones are in a display case for all to see. You would not know they are pre-release unless you try to buy one, I think.
I just got my 30GB one from Woot! last week - it's all set up and working. Very nice device, too. In my particular case 80GB would be a major overkill. I've got all of my favorite albums and all my pictures schlepped away on to this box and still have 20GB free. Geez.
-CB
