First reported by DSOGaming, the Project Mojave Revitalization team is calling it quits after its first (and last) release. PMR was a continuation of the ambitious Project Mojave mod to bring areas from New Vegas into Fallout 4, with the original PM devs themselves having hung up their spurs after an early access release in 2021.
Project Mojave is not to be confused with Fallout 4: New Vegas, a project aiming to do a 1:1 remake of the 2010 Obsidian classic in Fallout 4's shinier, upgraded Creation engine.