Thanks for the input so far. So it sounds like aside from the restaurants that do a larger menu change around the 4 seasons (and supplement with changes in the sides, or market-dependent specials), there may not be a predictable cycle to menu changes. Responses to changes in staff, or changing up specific menu items that aren't popular may happen, but not predictably. Has anyone noticed any restaurants that update their menus more frequently in the spring/summer when more produce is coming into season in abundance, and yet also change it in the winter, but less frequently -- so different pacing of menu updates depending on season? I can't think of any myself, or at least have never noticed it, but I also don't tend to dine out regularly enough at any one restaurant to have noticed something like that. If anyone has examples, I would love to hear it.