So far there is nothing in Lion that makes me want to upgrade. I've always been a day 1 upgrader when it comes to Apple, but I just can't seem to go through with it this time. OS X seems to be heading toward a more iOS like feel in my opinion, which personally I'm not a big fan of (even MS seems to be planning on going that route, merging Windows Mobile 7/8 with their upcoming desktop Windows 8). I've just started dual booting Snow Leopard with Arch Linux, and sadly think I'll probably either stick with Snow Leopard until it's obsolete, or switch over to Arch permanently unless whatever comes after Lion really impresses me.