I would imagine the price would drop somewhat. Not sure how much, but the price should go down. Yes they will be making an 04 Cobra, but it will be the same thing as the 03, only they are offering 2 new colors. The Mystic color and orange. I can't remember off the top of my head what they call the orange color though. It should look pretty nice.
My car was only 6 weeks old and I wanted to trade it in for a 10th Anniversary with only 1000 miles and the dealer only wanted to give 25,000. First they F**K you on the sale of the car and then they want to do the same on the trade in as well as the second sale of the new car.