There is a discussion on the Lab Boards about the change.
It seems the changes are IMPROVEMENTS to me. More Salmon in the Pacifica.
Here is the chat. See page 2 where they are comparing an old bag to the new bag.
http://www.lab-retriever.net/board/a...7341900p2.html
Also, on the Acana web site it says in a Red box new formulas are coming out.
http://www.championpetfoods.com/acana/products.php
So they are telling people.