So they just gave the title and showed the cover mock-ups; no specific info till Monday?
Pass. Like I've passed on everything after the DMG except "Monsters" and that's only because I had store credit at a store going out of business and had to buy something.
So some of the code names make sense after the fact, some.
Why then do you think they picked this code name?
. . . for Modrons . . .
Maybe
The tagline is "Discover the truth about the great conflicts of the D&D multiverse in this supplement for the world's greatest roleplaying game". Does that mean it's giving a chapter each to demons, devils, and gith? Or chapters to the conflicts, like the Blood War and Illithid hunt?
It does seem to be about "Mordenkainen's musings on the endless wars of the multiverse" (Although I doubt it will be in-character) and not the monster types.
I'm curious how the "several varieties of elves and duergar" are meant to fit in...
Which makes me sad. As the planes are locations, not just places for monsters and conflict. This feels like doing a Forgotten Realms campaign setting and just focusing entirely on the bad guy nations and villainous factions...
Someone needs to deceiver the runes!