Need for Speed took the year off last Christmas, which was probably good for the series. It didn't need a new iteration every 12 months and giving Ghost Games the time to craft a truly next gen racer is probably a good play.
We've known for a while the game would be returning this year, and it's now been confirmed that we will know more about it tomorrow. The Need for Speed Facebook page teased the reveal of the latest game with this image:
It turns out there was some hidden art in the image too. As brightened by people in the group, you can see art work from the game hidden inside:
We will know more tomorrow when the game is revealed. Judging from that art work, I'd say this will be something close to an Underground throwback, instead of Rivals. We will see though.