During his keynote at GameHorizon, Realtime Worlds Creative Director Dave Jones revealed that the company is working on a new project. The exec had no further details about the game, but stated that the first details will be revealed next year. If you want the details now, um ... we recommend getting a job at the company.
Jones noted that the unannounced game was actually the first title (pre-Crackdown) that the developer set out to build and is "very, very ambitious." The company even received $30 million in venture capital at the time to make it. Hopefully the studio will get APB out the door before talking about its next project.
Source -- Realtime Worlds reveals "very ambitious" new project
Source -- Realtime to announce second MMO next year