This from IGN:
After the sad news of the cancellation of Batman: The Brave and the Bold, Friday’s DC animation panel got DC animated fans excited again with new information for television series Young Justice.
A few details have been given so far for the show, but the panel, which consisted of Greg Weisman and Brandon Vietti, started by explaining that they have been working on the show for about a year now, and that they cannot wait for the series to debut in November on the Cartoon Network.
As explained, Young Justice will take place with the DC multiverse on Earth-16. As a conscious choice, DC chose this world as it is untapped, which allowed them to set the rules and conditions for their universe. To start off, Superman has been fighting crime for 10 years and the Justice League is new to the scene. So effective at their job, the heroes of this world have forced the villains underground, to band together in more intelligent ways against the forces of good. With celebrity status, the Justice League is constantly in the public eye, so they need a team to be able to work covertly, under the radar, in order to take it to the villains. And that team is Young Justice.
Young Justice will be comprised of Robin (Dick Grayson), Kid Flash (Wally West), Aqualad (new to the DCU, just appearing in Brightest Day #4), Superboy (Connor Kent), Miss Martian and Artemis (previously Artemiz in the DCU). The new Aqualad will be the leader of the team of side kicks which want more responsibility than just playing second fiddle to their superhero counterparts.
Speaking of Aqualad, a bit of interesting news for comic book fans: it was reported by Geoff Johns that Aqualad will in fact turn out to be the son of Aquaman’s arch-enemy Black Manta. Those who know the history of Aquaman, Black Manta and the former Aqualad, Garth, know how interesting of a development this is.
As far as the casting for the series is concerned, you can expect some pretty big names to show up on this impressive production. Most notable is Bruce Greenwood returning to voice Batman, after his take on the character in the straight to DVD film Batman: Under the Red Hood. Other names attached are Phil LaMarr (Aquaman), Alan Tudyk (Green Arrow), and Rob Lowe (Captain Marvel).