Cataclysm Preview!

On April 8th 2010, Blizzard is going to preview what is new with the Death Knight Class. Blizzard has already announced that Blood is going to be the dedicated tank tree while Frost is the dual-Wielding. Unholy is 2h DPS. Now that the trees has been selected for their roles, running the mastery system for the Death Knight class will be much easier.