We're propably getting a caster and a melee legendary again. Seeing how they made the mace a farm-a-lot reward and shadowmourne a storyline based quest (which also included farmalot but it was for mats), how do you assume they'll be introducing the new legendaries in cata?
I just hope they are all late game rewards, which will propably be the case since they've made blues valuable again (for the moment at least).
In b4 shadowmourne flame wars.