Just because tours start on Aug. 11th doesn't necessarily mean the full lineup will be released by then- I'm also expecting a strict no photo / video rule, but I can see Universal's social media team utilizing a lot of promotional photos from those haunts before opening night.
If I had to take a shot in the dark, Ghostbusters features in some way over the summer- tribute store, pop-up entertainment, something something, and the Ghostbusters haunt is featured as a semi-cross promotion / building hype for the event, and maybe even the overall focus is on 3 haunts that have a bigger appeal than normal to the non-HHN crowd.
Also, unless both haunts within SS23 / 24 are featured on the tour, I can't see either one of those locations being featured- too easy for someone to simply wander off to the other side and see things that Uni may not want revealed.
While personally I think these early tours would kill the hype a little bit for me, I'm intrigued to see how they work out and what the impact is- but I personally just can't see any haunt photos or videos making it onto the web before Aug. 30th that aren't from Universal themselves.