It's well known on this board that the people here know more than dealers almost all of the time. The dealer initially gave you a delivery date that was a guess. If you ordered the beginning of December there is no way you have to wait until late June unless they have severe production delays, which he cannot predict. My guess, based on limited info is that you will get it mid May.

No one has taken delivery yet, but some have been promised delivery dates beginning next week. Do you know your status? If not, ask the dealer or call Chrysler, sounds as if you should be D status, like almost everyone now.