new season was announced on October 16, 2020, just a day after season 3's debut, and filming began a few weeks later on November 2, 2020.
In July 2021, Doug Jones, who plays Saru, confirmed to Collider that filming was about to come to an end. As for an actual Star Trek: Discovery season 4 release date?
That's a bigger mystery than the inner workings of Discovery's state-of-the-art spore drive. While the gap between the show's previous season debuts have been 16 and 21 months respectively, all bets are off now that the Toronto-based production is taking place under Covid-19 restrictions.
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