This is the spec I used, it was mostly for PvE but I skipped over RT because it's bugged so I could get HF/FA
However, I'd use this for PvP:
Biggest problems I found were sometimes being a bit rage starved at the beginning, I'd had to save battle shout and charge/go zerker and then BS. Losing throwdown sucked, but I used Intercept glyph which gave me pretty much the same amount of stuns.
Raging Blow does a huge amount of burst and Death Wish is affected by mastery now.
Cleave damage has been reduced by 20%.
Heroic Strike damage has been reduced by 20%.
Juggernaut no longer increases the cooldown on Charge, but instead increases the duration of the Charge stun by 2 seconds. In addition, Charge is usable in all stances, however, the talent now causes Charge and Intercept to share a cooldown.
Lambs to the Slaughter: Instead of granting 10/20/30% damage to the next Mortal Strike, Overpower, or Execute, it now grants a 10% buff to any Mortal Strike, Overpower, Slam, or Execute that stacks 1/2/3 times.
War Academy no longer buffs Heroic Strike or Cleave. It now buffs Mortal Strike, Raging Blow, Devastate, Victory Rush and Slam.
Unshackled Fury (Mastery) now grants 5.6% benefit per mastery point, up from 4.7%.
Glyph of Rapid Charge has been changed from a 7% reduction to Charge's cooldown, to 1 second off of the cooldown. This change is primarily to clarify the exact cooldown reduction this glyph provides.
So then, Fury the new arena spec? I don't see any advantages to Arms over fury now. Throwdown shares DR with the only gap closer, arms now relies on heroic leap to close gaps.
Fury gets 40 sec HL and a second gap closer with heroic fury+root break. Will also likely have higher burst now too. Holy shit its season 5 all over again?