The official title of Underworld 4 has been announced, it’s “Underworld 4: New Dawn”. And here’s the plot:

Underworld 4 New Dawn Trailer

Plot of Underworld 4 New Dawn:
“After being held in a coma-like state for fifteen years, vampire Selene (Kate Beckinsale) learns that she has a fourteen-year-old vampire/Lycan hybrid daughter, Nissa, and when she finds her they must stop BioCom from creating super Lycans that will kill them all.”

Let’s hope there will be as much action as in the previous films.
:)