Cointreau, a brand of Rémy Cointreau, is entering a new era as it unveils a redesign of its iconic amber bottle in nearly 140 years, which will hit Australian shelves in time for National Margarita Day on Feb. 22. An ode to the history of Maison Cointreau, the new design maintains the recognizable look of the bottle while combining elements of the past, present and future, it says.