Blue ray I thought that was dead technologyYeah, I'm still processing Tenet. I've watched this movie four times, the most recently was just this past month (bought this off youtube when it was digitally released - the first time I watched it was hooked enough to watch it from beginning to end rather than segment it out like I normally do). It has an soundtrack (ie Posterity/Plan-Travis Scott) that sort of sticks with you.
I've just recently placed in an order for a Blu-Ray to go over Tenet's special features. With me it's a masterpiece of cinema. I'm not sure that Nolan is the type of director to make sequels though. Maybe his movies (ie in Tenet movie, Oppenheimer was referenced in the dialogue, Dunkirk was another WW2 movie that hae had made earlier) may be interconnected in a wierd way like M. Night Shayamalan (ie Glass/Split/Unbreakable). But sequels is not his style. I don't think Jordan Peele has done sequels either.