I was lucky enough to meet Mike and Bryan at this year's Comic Con. I had time for 2 questions.

Question 1:
I asked them if there would be guns in Korra, due to the presence of steampunk. They said "No, we want to avoid going down that road as much as possible."
No guns!

Question 2 (non Korra):
I asked them about the possibility of a blu-ray release for ATLA. They said there would be far too much work to pull off a blu-ray release. They said not to wait for it because it probably wont happen.

Then Dee Bradley Baker* came and did a whole bunch of animal sounds and talked a bit about Korra. He will be a part of that production (yay!) but, understandably, could offer no other details. Well, actually, he did mention a few things, like that one of the Korra episodes had been recorded already, and that the new voice actor cast is full-stop awesome, but that was it.

•As mentioned , the cabbage merchant will not appear, but "his legacy will be present in some form."
•As an evolution of the first series, The Legend of Korra will have more sophistication to it, but still keep the humor, fun hybrid animals, and action.
•It won't cover more mature subject material necessarily, just different mature subjects. "It won't be another war, but a different sort of conflict."
•On whether or not we'd see a love interest for Korra: "We love that stuff. We're total cornballs, we love cheesy teen romance. Rest assured, there's plenty or romance happening in the story, but it's the same balance of ingredients that we like."
•Katara IS in fact the mother of Aang's offspring, who will be central to the show. "We didn't mean for it to be a big super-secret, that they end up together."
•On the persecution of Airbenders being compared to the X-Men registration act: "We'll see something like that, but in sort of a different structure."
•Will it be a very different world from where we left off? "Yes and no, the world has definitely changed, and evolved, and advanced, but we're very conscious of keeping the same feeling. Not totally different, but it's definitely generations later."
•"There will definitely only be one Avatar at a time, and it is Korra."
•So will Aang have any kind of presence? "Yes...in his way."
•DiMartino and Konietzko will continue to work with Joaquim Dos Santos and Ryuki Hung, working to improve the design and animation.
•The Legend of Korra will in fact be a mini-series, with Michael and Bryan directly writing each episode.
•"As a mini-series, it's going to be really tight. While we really love the filler episodes, those are some of our favorites, this thing is just lean and mean. It's a really cool driving story."

The new series will premiere in November, 2011.

TZN: Will you be working on the new Avatar the Last Airbender series?

ANDREA ROMANO: I already am. I’ve recorded three episodes. It's seventy five years in the future.

TZN: Will Aang in any way be in the series?

ANDREA ROMANO: I don’t know how much of the series I’m allowed to tell you, but that whole generation has died. It’s the next generation. So it’s really cool. It’s the same producers. It’s the same brilliant attention to detail and I’m very excited. Right now we are just making twelve of them and we’ll see what happens.

* Katara, Toph, and Zuko are alive.
* Either Toph, Haru, or Toph & Haru, will have a daughter named, Jojo.
* Wei Bei is definitely a character
* Zuko’s son is about to become the new Fire Lord.

In 2 weeks, I will be starting my new job on, “Legend of Korra”, the new Avatar the Last Airbender project at Nickelodeon, as the Storyboard Supervisor. I am super excited about this!!! I will be working with my old friends and amazingly talented master minds Bryan Konietzko and Michael DiMartino along with my personal idols, Joaquim Dos Santos and Ryu Ki Hyun.

"There is also a rumor that there will be flashbacks of the original series. This may be part of what was implied when DiMartino mentioned that there was a "definite link" between the old series and this one.
Flashbacks in the new series may pertain to what the group did after The War, such as Zuko searching for his mother, the rebuilding of the Air Temples, the newly rebuilt Southern Water Tribe, if Kuei was restored to his throne, and Ba Sing Se after the Order of the White Lotus saved it from the Fire Nation."

"This series might be a mini series with 12 episodes. It might also be released during Fall of next year."
It won't be 70 years after, it will be 75 years.

And about Tenzin...
"His name may be based off of "Tenzin Gyatso", the shortened name given to the Dalai Lama, also part of the name of Aang's master, Gyatso. "
"Tenzin's age is however likely to be lower than 71."

We also know there will be 2 characters named Meelo and Wei Bee.

Right now (my) kids are working through Nickelodeon’s Avatar series, which I’m very proud of and which – it’s something that’s really important to me: Clone Wars means a lot to me, and Avatar means a lot to me too – I did all the creatures in that. Well, the new Avatar, they put out an audition and they wanted a flashback for the younger Avatar – who is now a girl – from when she was this little fireball five-year-old. I had my 10-year-old audition for it, and it was just two sentences, and, well, my five-year-old said, “Daddy, I want to audition. I want to try this, too,” and so I let her give it a shot. And she booked it. And the name of the series is The Last Airbender: The Journey of Korra – and my daughter’s name is Cora. It was just kind of an odd serendipity. To have her involved, with her playing a namesake, the heroic character of the show, that’s pretty cool. Pretty wonderful.

"This was my first week on Korra and I can tell you right now that Korra will not disappoint! It is amazing!! Everyone involved is so talented It makes me realize I need to up my game. With so much great work around me it should not be a problem. Now, I can not talk about the story on any level but I can say It is gonna be A GREAT RIDE! Mike and Bryan have a true vision for The Legend of Korra and I am so proud to be a part of it. My first Day was more about setting up my office ,learning the show and Reading the scripts but soon after that I was dropped into a heavy workload. It is nice to work with my old friends and to be back at Nick after 2 years away. "

I considered a while about posting this, but I will do it anyways. Some minor information about the series was released by Korean animators at Korean avatar fan community quite a while ago. They were kind of worried if the information violated their restrictions though.
'Tenzin is bald(has shaved head), just like Aang.'
source: http://cafe.naver.com/avatarking/84799
(you need to be a member to view the article)

For all you Avatar: The Last Airbender Fans… I’m talking about to the ones who love the animated series. I just want to give you a heads up… I just recorded an episode today in which I play a character that is a big surprise… (at least it was to me) & I must say it was so great to be back in that world and seeing a bunch of the old crew, including the Director Andrea Romano, the creators Mike DiMartino and Bryan Konietzko… I love you guys. Even seeing our sound engineer, Justin and Shannon in casting was great. Its like a family reunion. I did miss Mae Whitman and sent her a text from the sound booth.

But to the die hard fans, I don’t think you will be disappointed with the new series… I think its going to be amazing and I’m just honored to be apart of it again.

Long live the Benders from all Four Elements… but especially the Fire Nation!

"I'm playing a new character... But he definitely has something to do with Zuko!"

"In studio recording #LegendOfKorra... Its called "Skeleton In The Closet". Pretty amazing stuff. I think fans are going to love it. "

Information:

Co-creators of the original series (Michael Dante DiMartino and Bryan Konietzko) will write all of the episodes.

Why a female Avatar:

* Large audience of females of original show
* Adoration of headstrong female characters by fan base
* Time for a big action franchise with a female in the lead

Expected to be darker, more mature than original show; HOWEVER, they’re not attempting to target a new audience.

Dante Basco (Zuko) said he will return to voice a character

* Confirmed (via Twitter) that it will have something to do with Zuko
* One of the new episodes will be entitled “Skeleton in the Closet”

The Track Team (composers for the show) has said that the music will be “the Roaring ’20s with an Asian twist.”

Rumors:

The series may continue for more than 12 episodes if it gains enough popular support. (This happened with Avatar: The Last Airbender, which was scheduled for 13 episodes at first but continued for 61.)

Korra could be descended from Sokka and Suki.

There may be flashbacks of the original series. (DiMartino mentioned that there was a “definite link” between the old and new series.)

The Cabbage Merchant will not appear but “his legacy will be present in some form.”

Hi friends;

I've been busy so haven't read the forums in a while thank you for all of the nice comments. The movie I still have not seen <GRIN> but I was not surprised by what I'd heard. I did see the 4 element opening in the movie and really enjoyed the martial arts there.

I'll probably get in trouble for this but KORRA IS GOING TO BE SO AMAZING that the fans brains will explode so you probably won't want to watch if you like your brain:))

Yes to both. “@Avatar_Amylee: @deebradleybaker Are you voicing as Korra's animal? Or as a person?”

Question: do u have some news about Legend of Korra?
him: Original voice records are finished. All is being animated.

JP:Your next voice work will be in the upcoming mini-series Avatar: Legend of Korra, a follow-up to the Avatar: The Last Airbender series. What can you tell me about the character of Mako?

DAVID FAUSTINO: Thanks for your interest, but unfortunately not much, as, understandably, the creators of Legend of Korra would like to keep as much under wraps as possible. Gonna be a GREAT new season. The writing is phenomenal. I CAN, however, tell you that ‘Mako’ is tall AND handsome though…go figure…