Is the new hamburger really different?

[disneygal55]

I've read several posts from people that say that they have recently been to WDW and are finding that the hamburgers now taste different (and I'm not talking about the new whole wheat buns). What is different? We have a reservation at the SciFi and plan on going to Beaches and Cream and probably Pecos Bills where my DH anf DS's always get cheeseburgers. We'll be in WDW the middle of June. I hope the change is not a bad one!