I've heard little snippets from various Mac-using friends about MacOS X 10.3, but I didn't really bother looking into it until I ran into it at Ars Technica. From what I can tell from the stuff they link to, though, I'm not horribly impressed.
I'll certainly admit, the window tiling of Exposé is kinda cool and something I haven't seen before. Other than that, though, the code name to this version ought to be The version where we do all the stuff that Windows has had for years rather than Panther.
Showing the desktop? Check. Fast User Switching? Way ahead of you (not even a name change here!). Left-side navigation panes in windows? Yep. And wow, look at that, context menus if you happen to be an advanced user who can handle two buttons.
Given that all my readers are Mac-users, I'm sure I'll get an earful back ... bring it on, folks.
--Nick