I would love to Audition for The Last Airbender Book 2:Earth?

I am a huge fan of the Avatar: The Last Airbender series, and still watch the episodes to this day. I have heard that Shymalan was perfectly ready to go ahead and start auditioning for the new upcoming roles in the second book as soon as Paramount pictures gives him the green light. I would really love to audition for the Last Airbender 2 whenever the auditions start. Is there any knowledge of when the auditions might be? I would love to audition for Mai, Ty Lee, or any Earth Benders. This would mean the world to me. I have acted at my school for the arts for around 4 years now, and some acting groups outside of my school. Please, if you would help at all, i would love if you could help. Auditions? Thank you for your help.