Today during its iPhone 4.0 developer preview, Steve Jobs announced Apple’s much-anticipated mobile advertising platform, iAd. This has been expected since Apple acquired mobile ad platform Quattro Wireless, after having AdMob snatched away by Google (though the FTC may recommend blocking that deal).

Apple will sell and host the ads, giving 60% of ad revenue back to developers, and Jobs says that developers can add ads to their apps “in an afternoon”. Unlike most mobile ads, which kick users outside of the application they’re currently using, iAd keeps users in the same app. In a jab at Flash, while showing an ad, Jobs said “Oh, by the way, all of this is done in HTML 5.”