Kate Beckinsale may return for the new Underworld films, Digital Spy said.
The actress has been teased for part of the relaunching project, with a television show also in the works.
"There's a few things being developed right now and there's some characters that we really like," the Underworld series writer and producer told IGN.
"There's kind of more of a spin-off of some of the characters like we did with Rise of the Lycans and then another film is also being developed in the works with Kate possibly as well, and then there's a television series as well.
"It's kind of expanding that universe in many ways."
Divergent actor Theo James has been announced to be returning for the fifth Underworld film in a starring role.
The film will launch a new narrative but will be related to what has come before.