i haven't spent *a lot* of time in beta, but from what I did see DKs make pretty good tanks, I don't think it will really matter. A friend's DK was tanking Ramps / BF / UB / SP as well as my feral druid was at that level range 60-64ish. With the recent tank changes that went live (unlimited targets getting hit with Swipe / Thunderclap, plus the dmg boost to swipe) I don't think paladins are the end all be all tanks anymore. I've run my feral druid aoe tanking Ramps, BF, UB, SP, with no problems for my 3 shaman. Even before the tank changes went live I was still able to effectivly aoe tank 4 and 5 pulls.