Just got some bad news, could use some perspective.

Tell the dealer to make it right (you will accept an identical 2016 for the same price if they can't get the 2015) or give your deposit back.

Give them a firm date...as in noon tomorrow or you will be stopping by and they better have your money ready.

If they start playing any kind of games, ask for your money back and ignore all alternative offers that don't involve you driving out with a truck you like that day.