I am working on some graphics for an iPad 2 app and will soon convert them to iPad 3 "retina" size. What I am trying to find out is what size are the app icons and also the buttons inside the main app icon specified at? The screen background is obviously 2048x1536 9.7", but I do not see an official Apple listing for what size the app icons for both the main app launch and inside should be. While I know app icons on the inside when launched vary, there is usually something from Apple about this too. Any help would be appreciated so I can start on the new graphics.