This issue is a variant of Superman (DC, 2006 series) #683 [Alex Ross Cover].
Two covers were done for this issue; one by Ross, and an alternate one by Chris Sprouse/Karl Story (10 issues for 1 issue mixture). This issue is Green Shield Continuity #9, and went on sale 2008-01-02 (US).
For every 10 copies of the standard edition, retailers were allowed to order one copy of the variant edition.
Story continued from Supergirl (DC, 2005 series) #36, and continues in Action Comics (DC, 1938 series) #873.
Dan discusses what is happening with Wonder Woman's series. Ad for Action Comics #873. Appears on page 34 in this issue.
House ad for: Batman: R.I.P. hardcover. Appears on page 14 in this issue.
Total of 7 one-page and 1 four-page ads for: PlayStation Portable (game system, Sony Computer Entertainment), The Spirit (movie, Lionsgate), abovetheinfluence (Partnership for a Drug-Free America), The Joe Kubert School of Cartoon and Graphic Art (training,), Mortal Combat vs DC Universe (video game, Midway, 4 pages), DC Heroic Holiday Sweepstakes (sweepstakes, DC and several co-sponsors), Dungeons and Dragons Starter Set/Dungeon Master's Guide (role-playing game, Wizards of the Coast), and Batman: The Dark Knight (Blu-Ray Disc, WB). Appear in various places in this issue.