Sources say these departures are partly responsible forCrystal Dynamics being drafted to work on the game late last year.
Perfect Dark’s development is being led by The Initiative, a new studio founded by Microsoft in 2018.
Gallagher and Neuburger were previously studio head and design director at Crystal Dynamics.

“Its no small task to build a studio and reinvent a beloved franchise,” Gallagher told VGC.
There are more details and quotes over in thefull VGC story.
Video game development is difficult and founding a new, large company is difficult.

It does likely mean that the proposed reboot is years away.