It seems Midnight Club Los Angeles and the Wii port of Table Tennis are not the only games from Rockstar at Leipzig. Gamespot has posted an article stating that there is in fact a trailer for Bully: Scholarship Edition at Leipzig. They stated that the trailer was very short and the trailer looked like it was from the Wii version. Currently, we can't seem to find any sources that have this trailer but we will be on the look out for one.

Source: Gamespot.