There's a lot to be excited about after Monday's announcement of iOS 7. Flashy new design! Panels! Automatic app updates! Voice calls over FaceTime! Such system-wide changes aside, some of the biggest changes to iOS are found in Apple's own mobile apps. Several of the stock Apple apps for iOS are being revamped, gaining new features and deeper integration with the Apple ecosystem.Related StoriesApple iOS 7: Why flat design beats skeuomorphismWhat people hate about Apple iOS 7: review of reviews