Update: The patch was incorrectly pushed out and a rollback patch is in the works of going out.

Hearthstone Patch 10604 - The Warsong Commander Nerf

The patch is being reverted. It was incorrectly pushed out.

The patch notes that were available on the app store have been retained and can be found below.

Quote from Araxom A very small number of Amazon customers were able to prematurely update to 3.2 - we've since removed this version and will be publishing an update to revert to 3.1, soon. If you are unable to log into the game as result of this issue, you should be able to get back in once the update has been pushed and you have downloaded it on your device. We apologize for the inconvenience, and thank you for your patience in the meantime!

Official Patch Notes