Yes, review Humanbreak’s posts from last night. They did great work both running the content and documenting their experience, including time comparisons to their kills from BFA. I’m sure there are other examples earlier in those threads as well, they just come to mind since I saw them last night.
https://us.forums.blizzard.com/en/wow/t/old-raids-no-longer-soloable/676822/663?u=twoplusone-dalaran