In Lion, the Mac App Store will get additional features, said Schiller, including in-app purchases -- similar to what's available in iOS' own App Store -- push notifications, and anti-exploit "sandbox" technology that isolates those apps from the rest of the Mac.
Lion will feature additional tools, such as system-wide automatic document save, the ability to revert to an earlier version of a document, and a resume mode that restores a previously-closed application to the state before it was shut down.
During the WWDC keynote, Apple also revealed its iCloud service and ran through several of the new features slated for iOS 5, the mobile operating system upgrade scheduled to ship this fall.
But Gottheil was more impressed with Lion than with iOS 5.
"So far, Lion innovations are far ahead of iOS innovations," Gottheil said, again on Twitter. "As Spock would say ... 'interesting.'"
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