[UPDATE] Platinum Games says Astral Chain was developed with intentions of being part of a trilogy
Releasing in the coming months is one of the bigger third-party exclusives for the Nintendo Switch--Astral Chain--which is being developed by the beloved Platinum Games. During an interview with IGN Benelux, the director of Astral Chain, Takahisa Taura, commented on if the game would have any DLC, saying that while there's no DLC planned for release, Platinum has developed this new IP with the intentions of it being the first part of a trilogy. In terms of story, there's enough content to cover two more games in the future. However, whether we see those sequels in the future relies on how well Astral Chain sells, when it releases on August 30th.
Source