Hey, you got your mobile OS in my desktop OS!
More news about OS X 10.7 is out today. MacStories reports that iOS influence will be very obvious in the new OS X, although Aqua will still be predominant. Scroll bars and general scrolling behavior from iOS will make it into 10.7. The "rubber band" scrolling (when you tap the bottom of a scroll view and it darts down to the bottom) will be brought in, as will "pull to refresh".
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Quick Look will have a new white UI instead of translucent black. Apple is also adding in Quick Look popover for the Spotlight menu. Example: highlighting a document in Spotlight allows you to "Quick Look" and see a popover with info on the document.