While some nutrition values can change without obvious changes to formulas (like phosphorus), the carb values on Binky's list are all still pretty accurate. The one exception I can think of is canned Purina DM--the formula changed a few years ago which made it lower carb; but not many people want to feed that food anyway because it's so overpriced. Unless there's a major ingredient change (such as adding rice or grains to a previously grain free formula), then carb values do not change much over time. So if you're just looking at carb values, Binky's is still great. If you need to consider other values like phosphorus or fat content because of a secondary nutrition concern, then it is best to go with a food on a more updated list, or confirm that the Binky values are still accurate by calling the cat food company and getting the current as-fed values. Checking out the ingredients on a label is another good way to determine if the carb values are still accurate. If there's no rice, corn, soy, or wheat, or if there's not vegetables (or vegetable starches) as a major ingredient, then the food is going to be low carb.
When I had to go through a gazillion new foods because of my other cat's health related pickiness with food, I often picked up foods that weren't on the nutrition lists but I knew were low carb because of the ingredients. That way I could feed them to Bandit so they didn't go to waste if Gabby refused them.
