As "The Legend of Korra" fans continue to wait for Book 3, it appears the production team is wrapping on the series as a whole.

On June 6, "The Legend of Korra" co-creator Bryan Konietzko uploaded a photo with Michael DiMartino as well as the remaining production staff who are working on Book 3 and Book 4.

"After a long haul, we are in the home stretch with preproduction (design/color) on the Book 4 finale episodes," wrote Konietzko on Tumblr.

"I’m going to miss these incredibly talented, friendly, and funny folks when we finish in a few short weeks."

It would seem that despite Book 3 not having a release date yet, production work on Book 4 is already nearing completion (the assumption is that composer Jeremy Zuckerman has yet to score the Book 4 episodes).

This is coming after co-creator Michael DiMartino's post which revealed that production on Book 3 was complete, and simply waiting for any announcement from Nickelodeon.

"Today we finished the final sound mix of Book 3 at Levels audio," wrote DiMartino on his Tumblr page. "Can’t believe we’ve finished an entire season’s worth of shows. We’re so proud of everyone who worked so hard to make Book 3 the best season of Korra yet!"

"I know you are all excited to watch—believe me, we’re excited to share it with you! I wish I could say I had some news about Korra’s release date, but I’m sorry to say I don’t."

The earlier speculated release date announcement is at the San Diego Comic-Con this summer, so stay tuned.