A limited-edition Cosmic Toffee Crunch and a Dazzling Dark Mint flavour are joining Terry's Chocolate Orange in time for Christmas as part of a £3m relaunch. The activity, which will be supported by new TV ads kicking off later this year, includes a packaging overhaul designed to bring the old favourite up-to-date. "Past limited-editions have driven sales and have encouraged multiple purchases," said Dave McNulty, convenience sales customer director at Kraft Foods.