Good point of discussion here!

My predictions for Digimon Con are as follows, with the key points in bold font.
First, video games, beginning with
a release date for Digimon Survive. The trailer for Digimon Con showed a quick snippet of new footage for Survive, so it's not cancelled. I also see
a teaser for the next Digimon Story game happening. As for a tie-in video game for Digimon Ghost Game, that's the one thing that Ryo-Okay mentioned that I don't see happening, at least not yet. The main reason being the aforementioned closing of Digimon ReArise. They'll probably announce
the next Digimon mobile game now, and if we get a video game for Ghost Game, they'll announce that later. I can also see
at least one earlier Digimon game getting ported to current consoles, and if so it'd probably be Digimon World Next 0rder for the Switch and / or PC.
Ryo-Okay's predictions for the anime talk are exactly the same as mine, so I won't repeat what he said, LOL.
As for my other predictions. First and foremost, I'm expecting the first deets on
Digimon's 25th anniversary. Meaning, the reveal of the
anniversary logo and the
new anniversary posterboy (Following Dracomon for the 10th, Hackmon for the 15th, and Zubamon and Ludomon for the 20th, though Ludomon represented the 20th anniverasry of the Pendulums). Dracomon, Zubamon, and Ludomon were all revealed during the first quarter of their respective years (Dracomon in March 2007, Zubamon in January 2017, Ludomon in January 2018), so as far as the new anniversary posterboy, now seems to be the right time to reveal him. I also see at least
the next several Dim Cards for the Vital Bracelet being announced, mostly because we don't know what's coming after Primeval Warriors (Wormmon) in March and we already know that Judgment of Heaven and Karma of the Gods are two Dim Cards that are coming from an earlier issue of V-Jump, but due to the Guilmon, Renamon, and Terriermon Dim Cards being delayed, those were likely held up as well. I'm also predicting Dim Cards for at least the anniversary Digimon to be announced (And if so, Zubamon and Ludomon would be day one preorders for me because Ragnalordmon's my favorite Digimon). I can also see
a new v-pet with a smaller number of versions (Less waves than the Digimon X and Pendulum Z as Ryo-Okay said) being announced, but I'm not expecting that to happen as much as the other things I'm predicting. Mostly because the Digital Monster X is still in the midst of its international release and there's no word on if the rest of the world will get the Pendulum Zs or not yet.
The only think I am actively
not expecting is
anything related to Digimon Frontier's 20th anniversary. The merchandise that is being sold for Digimon Con is centric on Digimon Tamers, so they are still in the midst of its 20th anniversary celebration (Which is wrapping up at this point). It's likely that if we get anything for Frontier's 20th, it won't be announced until DigiFes (Or whatever they call it this year) in August.