I just checked Twitter and even the Japanese are so surprised this suddenly appeared out of nowhere, even the artists that worked on it hahaha.
It's kinda interesting that the trailer shows the world you fight against depending on the route, like first you're shown the Monster route but all the scenes from it are in the Angel world, same for Angel route showing the Monster World only. I wonder if we will only get to explore the world we fight against. Also each route shows a shadow of those Luka in the Labyrinth of Chaos in the title of the route, the Monster route showing the World Destroyer and the Angel route showing the Judgment form.
Another thing to note is that there's a scene of them arriving at the Angel world and Alice's portrait appears in her adult form, so yeah, she will be able to unlock her adult form before we go there for what I see, and the same will probably happen with Ilias.
From the Monster world, the Eden in it seems not to like Ilias at all, probably blaming her that now all Angels in that world are being hunted after losing the war Ilias started, taking into account Hiruko's profile. Though the most amazing thing in the trailer is seeing there's Queen Eva here, she's not a hobo in that world LOL.
There's the Chaos route too, though obviously this isn't mentioned but it's pretty much obvious since the content you see in the third part of the trailer doesn't seem to fit with the other routes. As a lot of people expected, Luka and Adult Promestein were behind the construction of Brynhildr. Nothing else from it worth commenting, apart from finally showing Laplace, really looking forward to checking her in Paradox. The last CGs they show seem to be a mix of all routes IMO, not just chaos, as the one of Lucifina and Michaela killing each other fit more with the Monster route.
What a long wait btw, but here we are. We can finally see the end of this franchise. I was kind of afraid COVID would put an end to it, but fortunately it didn't happen. Now for the next long wait for its release, trtr says in the blog that the next update won't be about MGQ Paradox but about that tentacle game they've been doing, so we should probably expect a winter release if we're optimistic.