the "this season" has an ominous ring to it
I raised this very thing on the previous page

Thankfully it's based on a book so will have a conclusion but I've a feeling it will take a couple of seasons, maybe three to do so.
May need to check how many episodes the original series 40 years ago took.
Edit: Original series 12 hours. So given each episode in the new one is 45 mins and it will be more detailed I'd say 3 seasons.