Thanks to Just Push Start, I can bring you these two fabulous screenshots along with information regarding the skill trees and shouts that come with the up coming Dawnguard DLC. All I can say is that Bethesda has given vampires much cooler powers than werewolves. Cry!

Bestial Strength (four levels) – first level: do 25% more damage as a werewolf

Totem of Ice Brothers (requires Bestial Strength)

Totem of the Predator (requires Bestial Strength)

Totem of Terror – Werewolf Howl of Terror affects even higher level creatures (requires Bestial Strength)

Totem of the Moon – summon an ally werewolf with a howl. (requires Totem of Ice Brothers)

Animal Vigor – 100 point bonus to health and stamina in beast form. (requires Bestial Strength)

Gorging – feeding heals twice as much health (requires Animal Vigor)

Savage Feeding – (requires Gorging)

Power of the Grave – 50 point bonus to health, magicka and stamina as a Vampire Lord.

Detect All Creatures (requires Power of the Grave)

Mist Form – turn yourself into an invulnerable cloud of mist while regenerating your health, magicka, and stamina.(requires Detect All Creatures)

Supernatural Reflexes – you move quicker, enemies move slower (requires Mist Form)

Blood Healing – killing a person with a power attack bite restores all your health. (requires Power of the Grave)

Unearthly Will – night powers and Blood Magic cost 33% less (requires Power of the Grave)

Poison Talons – melee attacks deal 20 points of poison damage (requires Unearthly Will and Blood Healing)

Night Cloak – a shroud of bats feed on enemies within melee range. (requires Poison Talons)

Vampiric Grip – Blood Magic: can pull a creature to you from a distance, and do choking damage once it’s close (requires Power of the Grave)

Summon Gargoyle (requires Vampiric Grip)

Corpse Curse – paralyze your foes with this magical blast (requires Summon Gargoyle)

Shouts

Drain Vitality – coax both magical and mortal energies from hapless opponent

Summon Durnehviir – summons the undead dragon Durnehviir from the Soul Cairn

Soul Tear – rips the soul out of an opponent and turns them into an ally