An update to the European Sony Entertainment Network online store has accidentally made the upcoming Skullgirls DLC palettes available for purchase early. Lab Zero originally said the DLC palettes wouldn’t become available until the Xbox 360 patch was out, so we can only assume that this was a mistake on Sony’s part. The palettes have been confirmed to be working on the European version only. They will not work with the American version of the game. Only the palette bundle for the full cast is available. Individual character packs are still not available for purchase.
Source: Sony Entertainment Network