The makers of Syndicate and The Darkness have a new project up on their website: Storm.
The only description reads:
Currently in development.
Co-op Sci Fi FPS.
It is our future.
Starbreeze has made no official announcement regarding the game, nor is there any accompanying media or information—just the image of what appears to be the inside of an industrial building of some sort.
I very much recommend both Syndicate and The Darkness first-person shooter fans. Not only are they solid shooters, but each offers a unique spin on the genre that sets them apart from stock shooters. And both have very strong narratives. Acclaimed science fiction author Richard K. Morgan (Altered Carbon, Thirteen, The Steel Remains, Crysis 2) penned the script for Syndicate.
Source: Starbreeze Official Website