Those of you who've ventured to multiplexes to see I AM LEGEND will have had the fortune of seeing either the exclusive IMAX preview for THE DARK KNIGHT or its theatrical trailer. The eagle-eyed amongst you may have noticed this:-

This billboard features in the film and carries a 05-15-10 release date. Its presence is likely down to the film's screenwriter Akiva Goldsman, who worked on a failed BATMAN VS. SUPERMAN project a few years ago. We probably will see the end of mankind before a BATMAN VS. SUPERMAN movie as Warner Bros have bypassed that idea in favour of a JUSTICE LEAGUE film. Personally, I would love to see this "could've been" film - the idea of Christian Bale facing off against Superman (lets have someone who can actually act, sorry Brandon Routh and Tom Welling) is tantilising. There were a myriad of unproduced Batman films in the late 90s and early 00s. When BATMAN & ROBIN crapped the bed the people behind the franchise began to think that maybe they should take things in another direction. I think these are all the projects that were under consideration, hit up Batman on Film for more info:-
BATMAN TRIUMPHANT - Joel Schumacher would've returned to the franchise, this time using Scarecrow as the villain. Interestingly I AM LEGEND screenwriter Mark Protosevich wrote a draft of the script. BATMAN YEAR ONE - Darren Aronofsky utilised his wonderkid tag to develop a grim and gritty origin story with Frank Miller. His take was extremely different to the eventual Dark Knight genesis movie, BATMAN BEGINS. BATMAN BEYOND - Based on the hit animated cartoon about an aging Bruce Wayne and the new Batman. This film was developed by writers Paul Dini, Alan Burnett and Bruce Timm and director Boaz Yakin. BATMAN VS. SUPERMAN - Wolfgang Petersen signed on to direct Andrew Kevin Walker's script (which was rewritten by the aforementioned Goldsman). Rumour had it that Colin Farrell and Jude Law were to star.
WB sure have given I AM LEGEND a nice push in terms of marketing and these little Batman related "add-ons" and with these numbers it looks like it all paid off. source - /film

Will Reynolds hasn't written a bio just yet, but if they had... it would appear here.