Let's face it. The Mists of Pandaria information drought is ongoing and likely to keep up for quite some time. As a result, we're stuck in a holding pattern. We know the class needs some changes. We know we have been promised (or threatened with, depending on your viewpoint) changes for blood death knights, if only via a general change to the tanking paradigm. None of that information is forthcoming, however, and the blues lately have indicated it won't be coming for a while.
With that in mind, what we're left with is speculation. Today, I'd like to discuss three major changes I think we'll probably see with the new patch 5.0, one for each death knight tree. We already know change is a pretty huge constant for our class. It comes with the territory. We'll roll with the punches, as always, but it's nice to know what's coming. It helps you brace for it.