Blizzard have given a unequivocal statement that Frost is designed for dual-wielding. That two-handed Frost will not, and is not intended to, give the same DPS (for raiding) as dual-wield will.
In tanking, it’s the same: you get higher TPS in dual-wield. Just remember, you should have more expertise to tank dual-wield than two-handed.
What’s refreshing is a black and white statement about their design intent, from blue poster Zarhym.
Q u o t e:
Just curious….are we ever going to see a viable 2h frost spec viable for raiding again. 2h frost was the spec i enjoyed the most, even more so than Unholy. I know there are other dks thinking the same thing? are we ever going to see a viable 2h frost spec for raid or is it going to forever remain the tree for DW?
It’s not very likely you’ll see a viable two-hand Frost raiding build any time soon. Each death knight tree already offers a good deal of versatility given that there are potential DPS, tanking and PvP avenues in each. They’re designed so that players can choose their path based on play style and flavor, not because of role (in the way that a Holy priest who wants to DPS as Holy is out of luck). Trying to also have dual-wield versions from Blood and Unholy builds made the matrix of what we wanted to accomplish a little too large. If there does end up being a viable two-hand Frost build that works, we’re not going to go out of our way to break it. That said, we aren’t going to go out of our way to promote it either. The Frost tree is currently meant to be a dual-wield tree much in the same way the Fury tree is a dual-wield tree for warriors.
We wanted death knights to dual-wield. Making every tree have a dual-wield build wasn’t working. One tree had to become dedicated and we thought Frost made the most sense.