Sony has filed a new trademark registration for something called Days Gone.
Days Gone is a trademark Sony Computer Entertainment America registered in December, with the US Patent and Trademark office.
The new IP was picked up by DualShockers and is registered under the 'computer games software' and 'video game software' categories. Particularly interesting is how the trademark describes it as offering online services, which could be anything from social features to actual online play.
Sony has yet to officially reveal anything by that name.