Checked IMDB & there seems to be some new cast members added.
Jonathan Walker is rumored to playing someone named Colin. His character breakdown reads: [COLIN] Around 40 years old, quirky and a bit cynical, he sews some seeds of doubt and suspicion among his new colleagues, Kate and Adam, and he plays poker with Jonas to blow off steam. Colin would rather commit suicide than be consumed by the THING...SUPPORTING (27) Submit British, East Indian, Spanish, Asian, etc, scientist types"
Another person added to the list is a woman named Kim Bubbs playing the role of Juliette. Her character breakdown: [JULIETTE] In her early 30s, French, fluent in Norwegian, she was educated at the Oslo Geosciences Academy, and is one of the geologists who discovered the alien site in Antarctica. Sensing Kate's frustration with the language barrier, Juliette befriends her, providing helpful translations and a kind smile among strangers. As the story escalates toward crisis, Juliette convinces Kate that her colleague Lars has succumbed to the THING -- as a trick to conceal her own identity as the alien shape-shifter...SUPPORTING (17)