Batman Forever
Developer: ?
Publisher: Atari
State of completion: Did development start at all?
Also planned or released for:  
Notes: Game is listed as a CD game due for April 1996 in the Atari Dealer Price List Q3/1995.

FT: And then we did another deal with Acclaim where we were able to get the rights to ... Batman Forever and a few others... and they were pretty big deals. It's unfortunate that, you know, the system didn't get rolling enough to really see those projects come to reality.
FT: Batman Forever really never got... it was probably the least developed of any of those titles that I meantioned.
(CyberRoach Magazine #9, 2/2000 - Interview with Faran Thomason)

Coming attractions for Atari Jaguar
SUNNYVALE, Calif. - Jan. 6, 1995 - Batman Forever, Thea Realm Fighters and Primal Rage top the list of coming attractions for the 64-bit Atari Jaguar Interactive Multimedia system in 1995. "The focus at Atari for 1995 is great software and lots of it," said Sam Tramiel, CEO of Atari Corporation. "We are working with over 200 developers to bring a wide variety of new games to the 64-bit Atari Jaguar in 1995. The powerful Jaguar technology can handle popular arcade games like Primal Rage or provide the speed and graphics necessary for brand new games like Batman Forever and Thea Realm Fighters."
Batman Forever, based on the much-anticipated Warner Bros. movie scheduled for release this summer, pits the caped crusader and his sidekick Robin against Gotham City villains Two-Face and the Riddler. The Atari Jaguar Batman Forever game will incorporate the movie's characters and feature the films newly-designed costumes and high-tech equipment.
Market research demonstrates that over 90% of the U.S. population is familiar with the Batman character, so there will be wide appeal for the game. Batman Forever is scheduled for delivery to stores late in the 3rd quarter.
(Atari Press Release 01/06/1995)

Screenshots, Pictures: