As of writing, we still don’t know if it will be connected to the original Digimon Adventure series, or some other Digimon series like Digimon Tamers and Digimon Frontier.
The 6-part Digimon Adventure tri. movie series has now officially ended with the release of Digimon Adventure tri.- Chapter 6: Our Future.
We also don’t know if this would be a TV anime project, ONA, OVA, or film, or whether or not it’s an anime project at all.
In other words, we’re getting a new Digimon project.