Kojima Productions released its first and unique title in 2019. The game underwent rapid development, considering that Hideo Kojima established a new studio with a new intellectual property. The second iteration may be scheduled for 2025.

A character artist who had previously worked on Spider-Man 2, Hellblade II, and Death Stranding 2 included a reference to the launch of the second part of Death Stranding in his ArtStation profile, indicating the release year of 2025:

DS2 portfolio [Rumor] Death Stranding 2 Possibly Planned for 2025 | VGLeaks 2.0

The discovery was made by a user on Era. Please note that the current date may have been modified, but it serves as a solid reference.

Thanks, Resetera.