Steve Jobs kicked things off, to wild enthusiasm from the subset of the 5,200 attendees who could squeeze in to the Keynote room.
He handed the mike off to Phil Schiller to discuss Lion, the forthcoming version of Mac OS. News of note to iOS users includes:
Multitouch gesture support, for the trackpads on Macs.
Scrollbars will disappear and appear as necessary, maximizing the use of screen real estate.
A new button in the top right of apps to turn on full screen mode.
Mission Control offers a birds eye view of all documents, kind of like iOS multitasking dock.
I'll post separate blog articles on iOS and iCloud.