Toei Animation released the teaser for the third OVA, which is scheduled to premiere on September 24th. Digimon Adventure tri: Kokuhaku.
See the story:
Seeing Meicoomon's abrupt transformation and Leomon's death, before disappearing to the other side of the distortions, Taichi and others are unable to hide their agitation.
"If Meicoomon was infected, I want to know what caused it. Could there be early symptoms? When does the infection occur?"
While coming to terms with the situation that was beyond his imagination, Koushiro racks his brains over what he can do to counter it.
However, finding no effective methods, he presses Meiko with questions to get all the information he can.
"Please, you have to remember. We need more information to find out the cause of the infection."
Meiko shakes her head, unable to answer...
Agumon and the other Digimon are kept isolated in Koushiro's office in order to prevent infection, but signs of infection begin to appear in Patamon...
At the same time, Agumon and the others discover an important secret about the Digital World through Hikari's voice.
“The moment… is approaching…”
And when Meicoomon appears once again to fight them, the "moment" arrives.
Taichi and the others are agonized by the secret that has been revealed to them.
As their feelings intertwine, they make a decision.
"If I wait to do something 'one day,' I'll end up a grown adult before I even know it."
Now the adventure unfolds, once again…
Source: Digimon Adventure.net