Got these off a post in AvatarSpirit. Nickelodeon is now showing ads promoting the KCA, with Jackson Rathbone and Nicola Peltz doing some slime-bending. It's also possible that Dev Patel will make an appearance at Kid's Choice. Anyway the interesting bit is the new screen from the advert.
This could be Aang's wanted poster, with the first sighting of the fake Asian characters. It does seem that they wanted the Asian-ness but not to explicitly tie it to one country, be it China, Korea or Japan. However, I think the classical script used in the cartoon did have sufficient distance, and it's not really a problem if the entire Avatar-verse uses it.
There are streamers/decorations in the background so the festival from The Deserter is probably in the movie. Wonder why Katara looks so happy about that wanted poster.
Nickelodeon's advertisement for the KCA after the break.