Geoff likes to tease stuff since he seems to like to get attention with these kind of things.
Honestly I don't really have much hope atm. Usually I expect the big publishers to be listed day 1 announcement, not the ones that gets announced later...
The best scenario would be Geoff announcing Square Enix as part of next publishers and even announce Kingdom Hearts will be there. Would be nice if they can get Tai Yasue/Nomura announced for it like similar to what they are doing for Atlus's Metaphor, but I highly doubt Nomura would actually show up to these things lol.
Remember, some partners will not be revealed before the event. So until the end, there will be a chance.
Geoff knows what he's doing, and he knew that after Rebirth it was KH4's turn, and how loyal we fans are. So he has been laying the groundwork since last year for this moment:
Exactly that.
I also want to add that since the Rebirth trailer at SGF, Geoff has been personally thanking "Nomura-san", as he says, every chance he gets. Something he hasn't done with other developers.
I will share with you some that I could find/remember, in chronological order.
Links:
Even now we could add:
He is fueling rumors that KH4 may be at his event, which makes fans want to see it just in case. SE sees that people are speculating about this, and sees that we are receptive to seeing KH4 at that event, even more so than at Sony's.
Now put yourselves in SE's shoes. This already happened last year with Rebirth, by the way.
You have two events with big audiences. Where do you show the trailer, in the one that is going to have several big announcements or the one that is going to have few big announcements and many medium ones?
Well, as SE did last year, you want your game to get all the attention, so you want as little competition as possible. And on top of that, Rebirth was exclusive to Sony, and yet it was shown at the SGF and in the Showcase they showed XVI, when they could have done it the other way around.
But rumor has it that this year will be a State of Play, so that's a different story.
So maybe, Sony and Geoff are fighting to have the trailer, and that's why he hasn't been able to reveal it yet.
But I feel like SE wants to capitalize on the KH4 announcement to promote ML and the Steam release.
Now the question is, do they want to show the KH4 trailer at the Sony event, and the others at the SGF, so that each thing has its moment and generates hype and discussion on both days? Or show everything at the SGF, so KH is the protagonist and gets all the users and media attention?
Of course all this only makes sense IF there is a trailer to be shown. But certainly all the speculation that is forming is not unfounded.