Arby's is once again offering free snack-sized orders of their signature Curly Fries tomorrow, April 15, 2014 (i.e. Tax Day). They're calling it "Arby's 4th Annual Tax Day Curly Fry Giveaway."
The offer is good at Arby's restaurant nationwide and no purchase is necessary. You will however need to print out a coupon, which you can find on the Arby's website here.