Jeremy Zuckerman was the composer for both Avatar: The Last Airbender and The Legend of Korra, and he'll be coming back to work on the live-action adaptation of Airbender for Netflix. While M. Night Shymalan's version had infamously crapped all over the source material, Zuckerman praises Netflix for staying true to the feel of the original animated series by bringing in the original creators.
This comes from an interview with Discussing Film:
"All the right people are involved. [Last Airbender creators Bryan Konietzko and Michael Dante DiMartino] are going to be the bosses of the show, and they've always had incredible artistic integrity that's never changed which is why the show's been so much work, but also worth it."
We don't really know how far along the production for the series is yet, but I'm hopeful they'll be able to capture the same magic that the animation brought—a daunting task seeing that live-action has way more limitations than animation.
Personally, I would have preferred if the live-action series just focused on a whole new Avatar, but maybe they could save that idea for another animated show. Nickelodeon may have ended Korra a bit abruptly, but maybe Netflix is willing to give a whole new miniseries a go. Hopefully The Dragon Prince's Aaron Ehasz could help out as well, but I understand he has more important commitments to his own show.
No release date has been set for Netflix's Avatar: The Last Airbender, but hopefully we get our first look before the year ends.