Here are my thoughts.... Lion is a whole new OS but from using it for 3 weeks now (and finally reinstalling SL) I am not really sure what the big deal is here. 1.) It seems to not have a great many new or cool features to make it a whole new OS.. there is a newer finder, slightly different spotlight... There is Airdrop... new way to view apps and the dashboard... but I mean that isn't really enough to warrant a whole new OS? 2.) could there be other features coming and or something major not in the dev preview?? a redone mail app with fullscreen capabilities and some new scroll bars don't seem like enough for me to be amazed at this.