We asked about the rumor of having a $5k federal incentive. The advisor smiled and said we would be happy to wait our delivery scheduled Saturday.
Later, we asked "if we hear the incentive is delayed, can we postpone our delivery and refuse this car?". The answer was "The announcement is Friday so you'll be fine for your car on Saturday".
It may not be the $5k Federal incentive. But I don't think it's the heated stearing wheel. When we paid the deposit we were told it had the heated steering wheel. And we did the test drive with a RWD which had the steering wheel.