Unboxing reveals 6 different augmented reality cards, but what are they for?

Okay, so GAME recently unboxed  the Nintendo 3DS. And what was particularly curious is that they found six different cards to be used with the augmented reality games, five of which feature classic Nintendo characters including Mario, Link, Kirby, Samus and Pikmin. 

 What’s so strange about this is that the design of the card itself is not of any importance. It only acts as a reference point while the 3DS itself would use something like planar tracking to calculate what angle the in-game graphics need to be placed on. But I very much doubt this is a hoax so the question is, what is the purpose of these individual cards?
                                                                                                                                                              The most obvious conclusion to jump to is that, in addition to Target Practice,  there will be five other augmented reality games and they will feature these classic Nintendo characters. And while Reggie hasn't ruled out that Mario will make an appearance, that conclusion almost feels too good to be true. I want it to be true, but a part of me assumes these designs are purely decorative. But what do you think?