Why the restriction on newer Macs for Airplay Mirroring? Surely you just need a machine fast enough to do the encoding (surely most Mac Pros come into that category, regardless of age?) and a good local network connection.
I'm glad to see multiple-monitor awareness for Full Screen, but can anyone clarify what that means? Does it still blank out the other monitor, or can we finally full-screen more than one app across multiple monitors?
Regarding the feature-list; the usual Unix section that lists some of the more advanced features seems to have been omitted this time around, is there any new developer documentation listing the non-user facing changes such as OpenGL changes, UI rendering etc.? I was hoping to find out more about what the changes actually are exactly. Some of the stuff has kind of been lumped under System, but I'm pretty sure there are others not listed.