[...]After reading the article and realizing it talks about things that have not been revealed yet, I decided to contact a few sources about these new details. This is what I could find out:
This season was originally supposed to focus very little on Gotham, but this changed due to the coronavirus. COVID-19 pushed back production to Fall/Winter, which means it is hard to film a lot of scenes during the daytime without any rain or snow. Seeing as how Gotham is basically always supposed to be dark and cold, it was decided to focus more on Gotham than San Francisco. As you most likely already have realized, the aesthetic of San Francisco is going to be harder to replicate in the winter compared to the dark and rainy Gotham.
Red Hood will be the main villain of the first half of the season, with Blackfire being the main antagonist of the entire season and especially the second half. This is done similarly to how season 1 was written, with Blackfire having Trigon’s role (though Blackfire appears more in her season than Trigon did in season 1).
Scarecrow is very different from past versions of the character. I have been told that this version is, specifically, very different from Christopher Nolan’s Scarecrow, portrayed by Cillian Murphy. It has been suggested that the Titans version of the character is supposed to give off a Hannibal Lecter vibe.
A Red Hood suit has been made, though Scarecrow does not have a suit yet. This makes sense, as he is supposed to be in GCPD custody as revealed by EntertainmentWeekly. Scarecrow has not been cast yet.