Is the Nina a new style? If so, approximately how long is a bag out before it goes on sale? For example, how long have the Ginger and Carlas been out? Revolve Clothing has the brown metallic Ginger, Carla and Maria on sale and several colors in Sloane, as well as a few other styles on sale (plus the 30% off for a first-time customer is helpful) and I am SO tempted. But I just bought a Bulga with tassles, and I feel the Carla would be overkill on the tassle idea right now, so I will wait for the Nina. But how long must I pine for it? And what are the odds of any being left in black by the time they go on sale? Probably zero, right?