New Build Fighters!
Here's a prologue episode that's been released, actual series starts in spring.
From what I gather, we now get to see suits from the second season of 00 + the movie, AGE and G-reco which were previously locked due to some licensing tomfoolery. This time they're using some kind of VR headset to play what appears to be a gunpla MMO, and pilots are now actually inside their mecha and can get out and walk around.
We get forget-the-term-animal-people (even though they're just in-game avatars) for the first time in Gundam history too. I thought it funny that the first one we see in this episode, is called Rommel, of the 7th Panzer Division. A nod to Erwin Rommel no doubt. I feel like he might be the new Ral.
I do like the mecha designs. Here's some I saved:
Lead Gundam, based on 00 + Quanta (00)
Antagonist, possibly Rival Gundam, based on Age-2 (AGE)
Rommel's totally-not-a-scopedog, based on Grimoire (G-reco)
Somebody's Gundam, based on Seravee (00)