Keep in mind we are still fairly early in the PTR/testing cycle and things will change between now and patch release. The sky isn't failling and I would submit they are still open to change if they are setting up a test scenario like Xav described.
Obviously, Blizzard is aware of the concerns of tanks of all classes. That said, I'll work with what I've got and myself and another prot warrior will continue to be the tanks our guild relies upon. Any other class of tank has a tall mountain to climb to surpass our ability, experience and reputation.
your hat may be nice, but I have the little white tank top that says Legendary right across my boobs. I win. (or more correctly, H wins)