The film is set for release in February, 2022.
The plot is still kept under wraps, but former Batman star Christian Bale is added to the cast ensemble as the main baddie. The movie is expected to be based on the graphic novel "The Mighty Thor", which sees Jane Foster battling breast cancer and turning into the female version of Thor.
Portman confirmed it, "I'm really excited. I'm starting to train, to get muscles. If there can be all these female superheroes, the more of them they are, the better it is. I'm trying to think - it's based on the graphic novel of The Mighty Thor. She's going through cancer treatment and is a superhero on the side."
Meanwhile, Hemsworth previously said, "The last three films, I think we certainly pushed the envelope. We've had a few different versions of the character. Now people expect dramatic change. We've got our work cut out for us." He added, "We've got a fantastic slew of actor's in there, and cast and crew."