Just a quick heads up should you get your hands on an early copy of Arkham City on PS 3. Seems the download for the Catwoman isn't in the PSN store yet (in Europe at least), I got an error message when I tried to redeem it. After I did the game wouldn't start up because of corrupted data unless i deleted my save files. So be wary if you've already put some time in, you might lose your progress.
PSA regarding Catwoman code on PS 3
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