Just yesterday, I spotted Wildly Cherry M&M's at a Family Mart convenience store. According to candyaddict.com, this particular flavor of M&M's won't hit retail stores in the U.S. until March! So are we one step ahead of the U.S.? Try them while you can! (NT$30/ bag)
Also available are DARK CHOCOLATE SNICKERS bars. Again, I've only seen these at Family Mart stores, but I'm sure they'll appear on other store shelves soon.