I can't wait for the third season to start! First episode will air on Sept 21. I feel so bad for Uncle Iroh =[ But I think Zuko will pull a Snape on us.
I finished watching this anime last night. It was cool, and i'm in love with Sai There's a possibility that a Taeyang Sai will be released, but i don't think it has been confirmed yet, you can see him on the pic below (click to see the full size image) He's the one on the top right corner.