“Extinct” has the distinction of being released in some regions of the world but not others, thanks to a multi-national collaboration between studios in China, Canada, and the United States. On August 20, 2021, the film was released in the United Kingdom on Sky Cinema’s Sky Go service (via The Guardian). Although Sony Pictures is releasing the film in the United States, no official release date has been set. IMDb, for example, lists an October 16, 2021 release date in the United States. This may still be the case, especially since the film has already been released in other countries.
However, it is presently unsure whether “Extinct” will be released on this date (finally!). There has been no official confirmation of the mid-October launch date, nor has there been any release of a trailer in the United States. Similarly, it’s unknown whether “Extinct” will be released as a streaming-only film, a theatrical film, or a hybrid of the two. IMDB