Need for Speed: Hot Pursuit will deal with the eternal struggle between Porsche and Lamborghini, it seems. The 1.2 patch for the game reportedly brings with it several new Achievements and Trophies, accidentally discovered by one of Eurogamer's readers -- since then, Xbox 360 Achievements has posted a full list of the new Achievements.
It's pretty compelling evidence. The Achievements list cites specific events geared around the Porsche and Lamborghini. Also, this shouldn't be confused with EA's previous marketing stunt to give users DLC for the game which, it seems, is still ongoing.
We've contacted EA for comment and will let you know what we find out.