BM is the one and only viable spec (it's also pretty damn OP when popping CDs).
Many comps are viable to a high level from what I've tested: KFC (with any healer; Druid is superior due to the CC and HoTs then Paladin/Resto Shaman). Then we have other comps such as triple BM Hunter. I've yet to test anything else but from what I know and have seen, the following classes are Top Tier: Warrior, BM Hunter, Resto Druid, Resto Shaman, Holy Paladin, Death Knight. Mages are close behind but not god-like as they are countered a lot by BM Hunters.
Pet: Spirit Beast (Heal + HoT on a 28 second cooldown).
Second best pet is the Crane (4 second Sleep, instant cast - doesn't DR trap)
The Crane is superior to Monkey therefore rendering Monkeys obsolete.
You will generally want to be popping Rapid Fire along with Beastial Wrath, PvP agility use trinket and possibly stampede depending on the comp.
NOTE: The 4-set bonus makes it so Rapid Fire grants 3200 PvP Power when active and the actual haste is pretty pointless anyway as BM so you should be using it for a flat damage increase. (never use rapid fire for cobra shot purposes)
- I move with E S D F
- I set Arena focus 1/2/3 with Naga button 1 + Shift and Alt modifier
Important: you should have your abilities with CDs that you need to know the CD of close together, as you may know camouflage is now a mini vanish in combat so I will be moving that towards my readiness on my bars in the near future.
Glyph of Disengage - Increases distance when you travel with Disengage
also allows you to disengage back up to the second floor of dalaran sewers.
Glyph of Scattering - Removes all DoT effects from the target that you use scatter shot on.
Third glyph is dependant of who you are facing in arena - you can now see who you are facing before arena starts and you can change glyphs and talents accordingly.
Glyph of Mirrored Blades - Causes Deterrence to reflect all incoming spells.
Glyph of Master's Call - Increases duration of Master's Call (freedom) by 4 seconds.
Glyph of Mend Pet - 50% chance per tick to remove one Magic, Poison, Curse or Disease effect from your pet.
Glyph of Camouflage - Camo will give stealth even when moving but movement speed reduced by 50%.
Glyph of Explosive Trap - Removes damage from Explosive Trap but grants it a knock-back effect when triggered.
Glyph of Stampede - Duplicates your current pet when you use Stampede instead of using your stable.
Glyph of Revive Pet - Removes knockback from direct damage when casting Revive pet.
Glyph of Aspect of the Cheetah - Removes daze component of Aspect of the Cheetah but puts aspects on a 4 second CD when you are hit directly by an attack.
This page will be updated with more information in the near future.