http://www.wealthwire.com/news/inflation/4210?r=1
I'm aware of calls for changing the metal composition for the coins, but this is the first I've heard that they will be phased out altogether. The quoted article does not list a source for their claims - I'm not able to corroborate it...
Maybe this isn't the right place to post this so I apologize. I was speaking with a Precious Metals broker this past weekend and he brought up the subject of copper and a future demand for it. He told us the amount of pure copper in a .01 penny and indicated that you'd want to "hoard" pennies...
http://www.coinworld.com/articles/testimony-cites-savings-from-using-steel/
"Employing steel as the dominant component of a new alloy for the Roosevelt dime, Jefferson 5-cent coin and the America the Beautiful quarter dollars would reduce the costs of raw materials for the three denominations...