10.0 looked exactly the same as 10.1, it was just a little bit slower and a little bit less stable. the only huge cosmetic change was that in column view, folders did not have the gray arrow to the right of them, so if something had a custom icon, you could not tell if it was a folder or just a doc/app. it also lacked the ability to position the dock on screen or select the scale effect, but tinkertool made all of this possible anyway. all in all, 10.0 did not look much different at all. i'd be interested to see some public beta shots, as i believe the apple menu was in the middle of the menu bar and it had that nifty looking music player with the coolest icon i've ever seen.