full screen apps, auto save, versions, resume, these are the things that would sell me on lion. except every single one of them comes with an asterix "*Available with apps that have been developed to work with Lion." ...to me that just sounds like smoke and mirrors. 1. maybe some smaller mac-only apps will leverage these features in an attempt to be more competitive, but i'm not counting on adobe or any other large cross platform developers ever bothering. i heavily use creative suite and various 3d packages, and i'm betting that just like open CL, many of these lion features make nice marketing bullet points but translate to very limited real world adoption. 2. none of this is really anything that developers couldn't already do if they desired: fullscreen - see chrome; autosave/versions - see after effects or final cut; resume - see text wrangler. so one may counter "but apple is providing a consistent and unified experience for these features" to which i respond "see my first point." it will be as it was, a hodgepodge of inconsistent, per-app behaviour. so, i guess can look forward to their other headlining features? -the app store (nope, they already gave us that and i already don't really care) -launch-pad (no thanks, a prettied up grid display of my apps folder doesn't really do much for me. i'll take quicksilver, spotlight or even pinned-to-the-dock icons to get me to my program quickly, rather than swiping through app pages, presumably admiring the softly blurred wallpaper image) -mission control may or may not be a refinement on expose, i dunno. looks convoluted through; if windows are grouped by app and you're looking for a specific app window, how useful is it buried under the "pile" of windows that represent that app? -air drop looks like they took the "shared" area from the finder sidebar and made it a lion-to-lion-only feature. presumably they're sprinkling lion pixie dust on it so that you don't get the "connection failed" error that happens half the time you currently try putting something in another user's public>dropbox folder. anyway, mostly this is just a rant, as i intend to time my macbook pro upgrade this summer so it is bundled with snow leopard but i can get lion through that "up-to-date" window they usually provide. i'm sure as time goes on certain updates will become lion-only and i'll have to adapt, but i got burned being an early adopter of snow leopard only to deal with all the initial release bugs and no real performance improvements from all that grand central and open cl mumbo jumbo. i seriously miss the days when new versions brought truly useful stuff like expose, spotlight and time machine!