Thank you both for weighing in!
I can't find Chicken, Turkey, Duck except a formula for cats. The one I posted is Chicken, Turkey, Trout. Is that what you mean?
The Chicken/Turkey/Trout formula is the bag I have right now, but that is being replaced with the "Carnivore" Chicken/Turkey/Duck. Which is the same formula, based on the ingredients, just with a different name and slightly different branding (and Chewy confirms they are the same:
New look, same great formula! This product has recently gone through a packaging change from "Go! Fit + Free" to "Go! Solutions Carnivore". Customers may receive the old packaging during this transition.
https://www.chewy.com/go-fit-free-grain-free-chicken-turkey/dp/40450
New bag:
Chicken meal, turkey meal, salmon meal, de-boned chicken, de-boned turkey, de-boned trout, potatoes, peas, tapioca, lentils, chickpeas, chicken fat (preserved with mixed tocopherols), duck meal, natural chicken flavour, whole dried egg, apples, herring meal, salmon oil, alfalfa, de-boned duck, de-boned salmon, sweet potatoes, flaxseed, potassium chloride, pumpkin, carrots, bananas, blueberries, cranberries, broccoli, blackberries, squash, papayas, pomegranate, dried chicory root, dried Lactobacillus acidophilus fermentation product, dried Enterococcus faecium fermentation product, dried Aspergillus oryzae fermentation extract, dried Bacillus subtilis fermentation extract, choline chloride, vitamins (vitamin A supplement, vitamin D3 supplement, vitamin E supplement, niacin, L-ascorbyl-2-polyphosphate (a source of vitamin C), d-calcium pantothenate, thiamine mononitrate, beta-carotene, riboflavin, pyridoxine hydrochloride, folic acid, biotin, vitamin B12 supplement), minerals (zinc proteinate, iron proteinate, copper proteinate, zinc oxide, manganese proteinate, copper sulphate, ferrous sulphate, calcium iodate, manganous oxide, selenium yeast), sodium chloride, taurine, yucca schidigera extract, dried rosemary, green tea extract, peppermint, parsley, rosehips, zedoary, dandelion, chamomile, ginger, fennel, turmeric, juniper berries, licorice, marigold extract, cardamom, cloves.
Calorie Content: ME = 3951 kcal/kg or 435 kcal/cup
Old packaging:
I'll take a photo of the ingredients list on the old bag when I get home, but I'm pretty sure they're almost identical. The caloric content is definitely the same.