This issue has variants.
Two covers were initially done for this issue; one by Lee/Williams featuring Joker, and an alternate one by Adams featuring Joker and Batman (10 issues for 1 issue mixture). Later, a third cover was done for the Retailer Roundtable Program (the variant cover with an added blue shading). This issue went on sale on 2007-11-29 in the US (on schedule). This issue was originally announced to have a variant wraparound cover by Frank Miller, but later DC announced via press release on 2007-11-06 that it would be by Neal Adams instead (and not wraparound).
Story continued from the previous issue and continues in the next issue.
Dan shares Liz Gehrlein's list of all the known universes at this point. Ads for next issue, Countdown Presents: The Search for Ray Palmer: Red Rain #1, Green Lantern #25, and Tales of the Sinestro Corps: Ion #1. Appears on page 34 in this issue.
House ads for: Zuda: Bayou (1/2 page), World of Warcraft, Heroes hardcover, and Zuda comics.com. Appear in various places in this issue.
Total of 6 one-page, 1 half-page, and 1 two-page ads for: Clive Barker's Jericho (video game, codemasters), Resistance Fall of Man (video game, Insomniac, 2 pages), World of Warcraft (card game, Upper Deck), Joe Kubert School of Cartoon and Graphic Art (art school), Millcase and DrawerBoxes (storage solutions), Full Sail (computer animation school, 1/2 page), Beowulf The Game (video game, Ubisoft), and Age of Empires III The Aslan Dynasties (video game, Microsoft Game Studios). Appear in various places in this issue.