Is there any confirmation this is even a new announcement, and not just a feature on a game that's already announced?
They call it a "mystery" and then "speculate" if it's Black Ops 2 or Bulletstorm 2, both unannounced games, so the implication is clearly that this is a previously unannounced game.
They are doing the next NFS game that is going to release in the Fall.
Logical speculation, but pure speculation none the less. It hasn't been confirmed by anyone. That also does not rule out them making two games at once.