Hey, I'm new here, but have been reading posts for a while. I haven't seen anything, and I don't know how much Lego does with cross-promotion things, but Wizards Unite sent out an interesting email the other day. For those who don't know, Wizards Unite is a mobile game set in the Harry Potter universe. The email said "For some mysterious reason the Calamity is surfacing memories of Diagon Alley and new students at Hogwarts, but this is surely more than a stroll down memory lane. This month, think back to your Standard Book of Spells, Grade 1 and help uncover the significance of these First Year flashbacks."
I don't know if this means anything really, but the fact they mention Diagon Alley and it being more than a stroll down memory lane, might be something. The event ends on August 18, so that could be the day or on the 19th for a reveal, maybe. Honestly, I am just trying to find something to look for haha, and I don't know if this would be it or not, just a thought. Excited for the set either way.