That thread is from back in July and the list of foods on the first post is the ones they did not discontinue. The Chicken and Turkey dry is still being made. They discontinued many of their specialty lines like the weight loss dry and some of the novel protein wets.
Its appropriateness for diabetics is being questioned. They changed they packaging from saying 8% to 13% carbohydrate and when questioned they just said that it was the same formula, but the carbs that did not impact BG were now included. More recently they confessed to having added a binder (tapioca??) that does affect some cats BGs. 13% is still better than many out there, though not what we ideally want a diabetic cat to be eating. Some people saw a significant rise in their cats numbers when trying to introduce EVO dry, some people don't see any change.
It is the one hard food I do have for diabetics. I use it during transitioning to wet and my one OTJ cats gets some in addition to his wet because he was getting to skinny. I don't feed dry to any cat I am trying to get regulated/into remission. If you can remove the dry so he is just eating the wet it would be better.