Based upon the comic series by Jeff Loeb and Ed McGuinness, Superman/Batman: Public Enemies is currently in production under executive producer Bruce Timm. The animated feature has a scheduled fall 2009 release date. Here’s the plot description:
SUPERMAN/BATMAN: PUBLIC ENEMIES:
United States President Lex Luthor uses the oncoming trajectory of a
kryptonite asteroid to frame Superman and declare a $1 billion bounty
on the heads of the Man of Steel and his “partner in crime” Batman.
Super heroes and super villains alike launch a relentless pursuit of
Superman and Batman, who must unite – and recruit super help – to
stave off the action-packed onslaught, stop the asteroid, and uncover
Luthor’s devious plot to take command of far more than North America.