The renowned star Natalie Portman clarified her lack of interest in re-joining the Marvel Cinematic Universe, while her absence from the MCU's canon has been elaborated by Kevin Feige, Marvel Studios president.
Thor's relationship with Natalie Portman's character Jane Foster was the main theme of the first two installments in the Thor franchise, but a spoiler for Thor: Ragnarok reveals the break-up of the couple, much to the dismay of fans.
"He’s off exploring the universe, still trying to police it and control the mayhem," Chris Hemsworth describes Thor's state since his last appearance in the Marvel Cinematic Universe. "But he’s certainly enjoying being a drifter, being a solo cowboy out there." However, he won't remain alone for a long time. Tessa Thompson plays a mighty warrior called Valkyrie whose emergance bestows a capable companion upon Thor on the planet Sakaar, as much as she does not really care about him.
"We wanted Thor to encounter somebody that was near his equal and that his relationship with Jane may have evolved in unexpected ways in between The Dark World and Ragnarok and we wanted to pit him against a character who was much more his equal and in many ways his superior," reveals Marvel Studios president Kevin Feige regarding Thor's future. "Valkyrie is trying to not embrace any sort of Asgardian heritage that she has. Thor thinks maybe that will create a bond between them and, on the contrary, she wants to forget it all entirely."
Portman unveiled her non-appearance in Ragnarok, and the MCU in general, stating that she's done as far as she knows.
Kevin Feige talked about Portman's absence from Ragnarok before, saying there are "many reasons" for her non-participation in Ragnarok, mainly since most of the film's events don't occur on Earth.
Starring Chris Hemsworth, Tom Hiddleston, Tessa Thompson, Jeff Goldblum, Cate Blanchett, and directed by Taika Waititi, Thor: Ragnarok will hit UK theaters on October 27, 2017 and then open in US theatres on November 3, 2017.