Saw this on Reddit, figured I'd share it here too.

The devs behind the Custom Edition overhaul mod Halo SPV3 have been working on a new total conversion mod for ODST, which they've finally decided to officially unveil.
In this case, their goal is not an overhaul of the game's campaign like with their previous work. They're more aiming to create their own game using ODST as an engine.

I recommend people to check out the linked blog post. It goes into a lot of detail on the project.