Jake here, and YES!  More Avatar news, and this comes in the form of new footage.  Check it out: http://www.youtube.com/watch?v=J6KExk2WoRE.  That trailer contains clips for "The Boiling Rock' (aka episodes 314 and 315)!  Once you're done spazzing out from the awesomeness of Avatar news this week, check it out!  The trailer is in another language though. :(  Thanks to hiro in Chat for the heads up!

-Edit by Dylan- Here's a link to the trailer in English: http://tinyurl.com/3cmfdy. Thanks SOTS for the link!

UPDATE: Here is a translation of the commercial, from TV.com:

"There's only one way to fight the Fire Nation, you need to get to what is inside you. Join us into a trip that no one is going to forget. Avatar Book 3 Fire! From Monday to Thursday at 6pm. Only on Nick!."