I'm going with 3 stars on this for a couple of reasons.
First and most important, it seems the forumla has changed. While tapioca doesn't bother me (I assume it's been processed correctly), there are a couple of other ingredients that do. I also can't find any info anywhere about where this company gets their ingredients from.
Since the formula changes are to cheaper ingredients, it worries me that the source isn't known, given the propensity for foreign suppliers to take shortcuts. So whether the source is ok or not, I'm taking a star off for not providing that info - it's an issue these days and should be addressed by a responsible company.
Second is that it's unfortunately no different from any other food, as far as my cats are concerned. There was no issue while I worked it into their diet, but it was only 3 days after that they started refusing it.