Per
this post on Tumblr, Pixel Dan's SDCC coverage revealed that Diamond Select Toys are making AtLA action figures, and sculptor Richard Force will be working on them. There will be three characters in the first wave, including Aang, and it sounds like Zach is trying to say Katara's name, but that's just my speculation. Further speculation is that a version of Zuko has to be in the first wave, right?
I'm really expecting good things. I usually like what Diamond Select Toys does with their Marvel stuff, and this way we can be pretty sure we'll get some great articulation and sculpts. I can't wait to see them.