With the release of LittleBigPlanet Karting this Tuesday, some cool new downloadable content has been revealed for not only Karting, but also all of the other LittleBigPlanet games as part of the DLC cross buy program that LBP has.
The first two pieces of content are returning from past years. These two pieces of content being the launch Spacesuit, as well as the Happy Birthday Cake costume for Sackboy. New to the LittleBigPlanet universe are a one week jersey for Sackboy and a Target costume & kart combination. The first of the two will only be available for one week from release on the Playstation Store, and will set you back $4.99 to add to your collection. The latter on the other hand is a set of DLC that is only available to those who buy the game at Target.
Though it is possible that this content becomes available for purchase on the Playstation Store sometime down the line, there are no currently revealed plans to make this happen. More than likely, copies of the game with the code for the Target pack will be available for long after release, so there is only so much of a rush to pick up the game. You can have a look at the Target set above, and the Jersey at this link.