I must admit, I don’t follow these things too closely, but was there any info released on the old raids in shadowlands?
With the stat squish and every previous expansion going 1-50, it’s safe to assume every old raid will be lvl50. Even with the extra 10 levels it might not be feasible to go there for pets/mounts/transmog and whathaveyou. Plus that “new” rule that you can only efficiently farm a place if it’s 2 expansions old or older might be wrongfully used in the shadowlands case.