I saw them at the 7-11 down the street! They have 2 kinds, white chocolate and dark chocolate. They did this with Kit Kat a few months back, too.
I personally am not a dark chocolate fan. Milk chocolate is fine, white chocolate is good too. Actually, I prefer Boyer's Smoothies, which are ALL peanut butter, no chocolate. (and THANKS AGAIN to Sherral for sending me some! They are sooo awesome, I wish they sold them around here!)