Well... Turns out the big announcement was about "Project Booster Fun"! Oh my!

Ok, kinda excited that the Buy a Box promo is going to be available in nonfoil in case I "need" one for my cube.
https://magic.wizards.com/en/articles/archive/making-magic/project-booster-fun-2019-07-20
Also, a bunch of sweet art has been spoiled for "Camelot meets Grimm"
Scroll through their Twitter feed to see it all, because they spoiled, like, 20+ artworks, and they're all gorgeous! Posting some selected arts here.
(B.t.w., one of the returning planeswalkers was confirmed to be
Rowan Kenrith by art detectives (her blade is the same in the old and new art).
Plains:
Seb's a boss artist (clever planeswalker symbol there!):
OMG gorgeous artworks! Getting John William Waterhouse vibes here!
Ok, this isn't creepy. At all...
Edit: Oh, almost forgot the alternate art of Goldilocks, which is... waaaaaaaaay less tame than the regular one! :scream: (Also, heck yes for Omar returning for this set! He was probably my favorite artist from Lorwyn block!)
Edit edit: Here's the regular art of Goldilocks, together with a tiny, tiny spoiler, next to the alternate frame that will contain the epic art above:
They actually didn't use the same art in the article, and "forgot" to delete the casting cost, p/t, and ability cost of the card. Looks like a kind of activated ability?