@G-Man: What?! You didn't hear about this book before yesterday?! BOO!! HISS!! What kind of Byrne fan are you?? (I kid, I kid.)
My two cents. This book may not be for the new school comic fans. Byrne loves doing throw back style comics. I grew up on the pre-90's era of comics so I'm willing to give this a try. I actually like not having everything answered right at the get go.
Byrne reading recomendations : X-Men run with Claremont. Man of Steel mini-series. His Fantastic Four run. Next Men. His Wonder Woman and New Gods/Kirby's Fourth World runs. Superman/Batman Generations 1& 2 mini series and the OMAC mini series both under the Elseworlds imprint.
@pinkdaizygirl: Your concerns about Cass, Stephanie, and Jason are valid in wanting them on the show. But I wouldn't expect anything, this is an alternate universe from what is in the comics, so histories and events will be different. And any relationship in this show will be canon but only canon for this show...Again since it doesn't apply to the comics.
Young justice isn't a direct adaptation of new earth, it's an entirely different universe. Its possible that Jason and/or Cassandra don't exist on this earth.
DC Entertainment has said the Young Justice series takes place on Earth-16. This was done because it was largely untapped and freed the series from established continuity restraints set by the main DC Universe or previously seen other Earths in the DC Multiverse.
A legit actress for X-23 since porn "actress's" can't "act" (which is funny considering how many fanboys & fangirls say the exact same thing when it comes to legit actors being cast for comic book roles on an almost regular basis).