Hlavin said the plot is under wraps, "but I can tell you it's not a prequel." He added, "It will satisfy old fans and excite new audiences, meaning that we don't want to redo the first three movies, so steps are being taken to honor what fans have loved but at the same time introduce fresh elements."...says THR HERE. If memory serves, there was once talk that a fourth UNDERWORLD film might be set in the future & (more or less) consider the plight of Vampires & Lycans in some distant timeframe. With DAYBREAKERS coming out (vampires in the future), I'm wondering if such a notion would still be germane.