Greg Weissman, creator of Young Justice and The Amazing Spiderman confirmed that Issue 25 of the Young Justice Comic-book tie-in is cancelled at long last. Issue 25, introducing Deadshot, Braniac, etc. will be the final issue of the comic book tie-in series.
In other news, Cartoon Network has still not released a statement on why DC Nation was so abruptly cancelled and whether the animated series will actually continue or not.
Cartoon Network signs "half-season" contracts with DC Comics. They have confirmed three have been signed. Season 1, episodes 1-13. Season 1, 14-26. Season 2, 1-10. The remaining ten episodes of Season 2 are completely finished and ready for airing, however, DC has to sign a contract with CN for the remainder of the season to be aired. If the contract fails, the episodes will most likely be released on DVD.
No official reply statement from Greg Weissman or Brandon Vietti yet.