I suppose it is:
The Theatrical date, in your country, is already set, checked, here in the TMDB, in Release Information.
But I do not know in what term, 30 or 45 or 60 or ?? days, the movie enters the upcoming category.
In the upcoming list for my country, the furthest is 2018-02-09. (+-30 days)

Ah - I didn't realise I'd set my profile as being in the UK. Since Red Sparrow does not have a UK release date listed, that would probably explain it. Thanks.

Ah, I understand.
I suppose a Moderator can now close this topic.

@Paradroid said:

Ah - I didn't realise I'd set my profile as being in the UK. Since Red Sparrow does not have a UK release date listed, that would probably explain it. Thanks.

Yes, that was going to be my suggestion as to the problem.