Dead Stop Trademarked
According to Siliconera, the developers behind Dead Island, Techland, have trademarked something called Dead Stop.
The trademark described the game as the following:
"entertainment services and providing an online game via an application for mobile phones and other electronic apparatus"
This could be one of two things in my opinion. It could be a new mobile game called Dead Stop. Alternatively, it could be a companion app for Dead Island Riptide, the new game in development at the studio. Still awaiting official news.