Last month chef Joanne Chang-Myers rocked Boston's collective world by announcing that she would open a fourth location of her monster hit bakery and cafe Flour, this time in Back Bay. And in what was once a Hard Rock, no less. Chang-Myers recently shared the above conceptual sketch of Flour4, which combines the familiar - the broken egg logo, clean, handsome design - with some new aspects - a different setup, some new materials, and some zombies. She's also shared an image of what Flour4 actually looks like right now plus some tweets about the process. She writes: "You'd be surprised at how much time we've spent designing condiment station at F4. Suffice it to say it can be measured in days not hrs."