“That will dictate a lot of what happens in the next season and we’ll see where we go with the testaments!”
However, the announcement seems to have worried fans as one reddit user speculates the new book could mean delays for the final series.
Reddit user OfHolland began: “So I just listened to the MayDay podcast interview with Wendy Hallam-Martin (editor on the show),
“production on season 4 will not start until march next year… she said they will need a while to carve out the arc for season 4 since The Testaments just came out and will dictate a lot of what will happen next season.”
source: express.co.uk