Add objects to status bar in iOS application?

Is there some new feature in the iOS SDK for adding stuff to the status bar in an iOS app?

I thought 开发者_StackOverflow中文版it wasn't allowed, but this app seems to do it:

http://itunes.apple.com/us/artist/holtwick-it/id288374601?mt=8

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I believe it's simply a custom view drawn above the status bar. IIRC this is how Reeder does it.