Hi Guys, After seeing the trailers I have the following conclusions:
**SPOILER Start**
1) We saw Zuko falling in the the trailer and since we are absolutely sure that Zuko doesn't die. Therefore, I think that Katara only hugs zuko when she finds out that he didn't die from the fall.
2) I think that Aang will not be able to defeat the firelord before the comet arrives
**SPIOLER ends**
WHERE IS IROH???? there was no mention whatsoever about uncle. He can't e removed out of the plot just in the end because he was a very central piece in the storyline. Come on bring Iroh back!