Both Kit Kat Duos Strawberry + Dark Chocolate and Kit Kat Thins Chocolate Hazelnut are permanent editions to the Kit Kat lineup, and are available in retailers nationwide now. Like its predecessors, Strawberry + Dark Chocolate combines two flavors — in this case, the sweet, fresh taste of strawberry with the rich, decadent flavor of dark chocolate. (It’s meant to taste like a chocolate-covered strawberry.) The bar is out in both standard and king size. Chocolate Hazelnut, on the other hand, is the first-ever new flavor for the Kit Kat Thins offering, which hit shelves last year. It joins Hershey’s “thins” candy lineup, including York Peppermint Pattie Thins and Reese’s Thins. Be on the lookout for the hazelnut slimmed-down treat in both 3.1 oz. and 7.37 oz. bags.