The fourth UNDERWORLD film is coming and it will be shot in 3D.
Sony’s Screen Gems is moving ahead with a fourth film in the “Underworld” franchise and is targeting a January 21, 2011 release.
STYD says, “We’ve received no word yet if Underworld: Rise of the Lycans stars Michael Sheen, Bill Nighy and Rhona Mitra, or former franchise stars Kate Beckinsale and Scott Speedman will return for the next film.”
source: styd