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I'll go out on a limb here, but does it have retina display?

There are two versions apparently, one for the 3GS and handsets previous to that and a HD version for the iPhone 4 but it's not showing in the app store.

I've let Rovio know via Twitter and it seems they are looking into it.
 
The only bad thing I see is that it is being sold as a separate app from the original. I would have liked to see it either as an update (as they do with new levels) or as an in-app purchase that is added into the existing installation. That way you wouldn't have two icons (apps) to go between... oh well!
 
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7)

45 levels for 99 cents. Can't beat that.
 
The only bad thing I see is that it is being sold as a separate app from the original. I would have liked to see it either as an update (as they do with new levels) or as an in-app purchase that is added into the existing installation. That way you wouldn't have two icons (apps) to go between... oh well!

blame EA for it. The bought up the studio. So I would expect to have to see your self buy more levels for the regular game.
 
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