As I recently (in wave 5) recieved Beta, I'm gladly willing to answer any and all questions regarding Hunter changes. I'm normally available in the AM (EST/-5GMT), and I'll get on them as soon as I'm available. I will also edit in any questions/answers here if they pop up in later pages.

In regards to pets:
Currently, Call of the Wild, Intervene, and Roar of Recovery are MiA from pets in their respective talent trees.
Abilities list for each talent tree:

Basic Attack (Claw/Smack/Bite) - All families
Cower - All families
Growl -
Avoidance - PvE AoE damage reduction

Cunning
Boar's Speed - 30% movement speed increase
Bullheaded - Pet PvP trinket+20% damage reduction for 12 sec, 3 min CD
Dash - 16 sec duration 80% movement speed increase, 32 sec CD
Cornered - same as Live

Ferocity
Heart of the Phoenix - 8 min CD pet Ankh
Rabid - 50% increased pet AP for 20 sec. 2 min CD
Spiked Collar - 10% increased haste, crit, and Basic Attack damage, passive.

Tenacity
Charge - Same as Live
Last Stand - Same as Live
Blood of the Rhino - 40% increased Healing, 20% increased Armor, 6% reduced chance to be crit.
Great Stamina - 12% increased Hitpoints.
Thunderstomp - Same as Live, although not sure if scaling changed.

There is currently no way to change your pet's talent tree.