Häagen-Dazs Shops has introduced a new Sundae Series, which appears to include a trio of decadent desserts. The launch is accompanied by promotions, including buy-one-get-one-free deals on Sundays and a Sundae Funday Club with rewards. However, it is unclear if the new sundaes are part of a larger collection or limited-time offerings, as some reports mention a Dark Cherry Truffle Collection and a limited-time Cuban flavor collaboration.