CB Strike has been renewed but a second season which will debut (TBD).

Is CB strike coming back in 2021?

The fourth season of 'Strike' ended in September 2020, and it was the longest season thus far, with four episodes. ... But it seems like we have to wait some more, as the series is probably just under production and the chances are very slim that we will get the fifth season of 'Strike' before late 2021 or 2022!

Is there going to be a 3rd season of CB strike?

The show makers had asserted earlier that they would not move ahead with the story in the absence of a book since it was about Rowling's writing and her characters. Thus, now that the new book is out, the new season has also been confirmed and 'C.B. Strike' Season 3 could release sometime in February, 2020.