Apple’s WWDC 2011 keynote has just kicked off and the first topic of the day is Mac OS X Lion. Looks like they may be going in the same order as the icons are shown in their big event banner. The Mac OS X update has so far included new mult-touch gestures, full screen apps, and a new feature called Mission Control. However, there are also some major changes in OS X Lion for the Mac App Store.
The new Mac App Store will be built into OS X Lion and will be adding in-app purchases, push notifications, and built-in sandboxing mode to ramp up security. There will also be delta updates added to make patching much easier and quicker.
New apps you can get for OS X Lion will support gesture features. Icons will also have the same download/install progress bar as we're used to seeing for iOS apps.