The World of Warcraft has had many really good classes and now has one more to add, the Death Knight. I have been beta testing for a few weeks now and have created a deathknight and achieved level 70. As of now the Death Knight class is very powerful and very fun as well. Death Knights starting zone is in Eastern Plaguelands on the far east side. Starting as a Death Knight, Warcraft lore is everywhere and is almost more of a story than a leveling experience and was very easy and enjoyable to play. Learning about the Lich King and many bosses from Naxxramus as they send you on your quests to do evil deeds.
Death Knight skills are different from the other classes, Runic Power and Runes are how their skills are performed unlike mana for most, rage for Warriors, or energy for Rogues. Blood, Frost and Unholy are the three different runes that are used by the Death Knight. The runes regenerate similar to energy on a rogue. Depending if your spec is in the Blood, Frost, or Unholy the runes can be transformed into a death rune which counts for any rune (Speced for blood will transform blood to death etc.). When skills are used Runic Power is created, almost like a Warrior gains rage when the Warrior swings. Runic power is the second way the Death Knight uses skills. Death Knights have skills of all kinds Damage over time spells(dots), melee skills that do weapon damage similar to Warrior or Rogues, melee skills that consume dots, interrupts for spells and even silences, freezing skills to hold your enemy in place, many many different skills. Many of these skills go well with each other and are meant to be used with each other and other classes. These freezes will go really well with mages and shatters.
Talent trees are fairly complicated and different from other classes. All of the trees have high dps and some tanking qualities. Specing your Death Knight in the Blood tree is more of a raid survival/dps spec, along with being the favorite choice for leveling up. Frost is apparent to be the tanking tree, giving resistances, armor buffs, and damage mitigation. Unholy tree has its survival qualities as well shape shifting into undead, summoning undead minions to fight(can raise your allies as a zombie to control after they die also!), swarms of insects, fighting after death is also an option in this talent tree.
Overall the Death Knight looks very well rounded and can assume many roles in the game from pvp, soloing, smaller dungeons, raids and still not powerful enough to have full raids or dungeons full of Death Knights.