Overview
Arms keeps its identity in WoW Forever: a big two-handed weapon, bleeds, and strikes that reward good timing. The tools that were weak in Classic have been raised. 
Rend now scales with attack power and can deal critical strikes, and so can 
Deep Wounds.
The spec plays across two stances. You switch from 
Berserker Stance to 
Battle Stance to land 
Overpower, and 
Tactical Mastery lets you keep a little rage on every switch. The swing timer shown by the game and 
Improved Slam make it a good spec for newcomers.
At level 20 in the beta, Arms sits in A tier among DPS, alongside the other melee specs.
Strengths and weaknesses
Strengths
- MobilityCharge to engage, then Intercept.
- AoE burstPool your rage for Sweeping Strikes and Cleave.
- ControlImproved Hamstring to hold your target.
Weaknesses
- Fragile rageIt melts when your hits are dodged or parried.
- Sustained AoEYour area damage fades over a long fight.
- Little self-healingVictory Rush matters a lot while leveling.
Read the details
You have mobility with 
Charge, then 
Intercept, and control with 
Improved Hamstring. By pooling rage for 
Sweeping Strikes and 
Cleave, you deal heavy area damage over a short window.
On the other hand, your rage melts when you miss or the target parries. Your area damage fades over a long fight, and you have little passive healing: 
Victory Rush matters a lot while leveling.
Key spells
Key talents
Improved Overpower (2 ranks)+50% crit chance on Overpower. The level 20 priority.- Your bleeds become a real share of your damage, since they can crit.
- Improved Tactical Mastery (5 ranks)Up to 15 more rage kept when you switch stances. Take it to 5/5 to unlock
Anger Management. 
Spearing Strike (from level 25)40% weapon damage to all targets, 80% more against Giants, Dragonkin and mounted targets, which it dismounts.
Bloodthrill (5 ranks)Your main-hand hits on a target afflicted by Rend can enable Overpower for 6 sec.
Weaponmaster (5 ranks)Replaces the Axe, Sword, Mace and Polearm specializations, and covers staves. Axes and polearms grant crit; maces and staves ignore part of the armor instead of stunning.- Improved Slam (2 ranks)Slam casts faster and no longer resets your auto attack.
- Sweeping Strikes around level 30, then
Mortal Strike around level 40.
Rotation and priorities
Leveling opener: Charge, Rend, 
Thunder Clap, then a few 
Sunder Armor until the mob dies.
Single target:
- Priority 5:Victory RushYou strike and recover 10% of your maximum health.When: As soon as it is available
Multiple targets: Battle Shout, Rend on every target, Slam after a swing, Thunder Clap, Cleave to spend rage, and Victory Rush whenever you can.
Stats
- 1Critical strike
- then 2Strength
- then 3Weapon damage
- 1 Critical strike
- Rend and Deep Wounds can crit
Order to be confirmed: the exact priority is not settled yet.
There is no established stat priority for Arms. Aim for critical strike, Strength and weapon damage. Crit seems to gain value since Rend and Deep Wounds can crit, but the exact order is still to be confirmed.
Leveling
At level 20 you only have 11 points: Improved Overpower 2/2 first, then 
Cruelty in Fury. Keep favoring Cruelty until level 30, when 
Two-Handed Weapon Specialization becomes reachable. Then come back to Arms for Sweeping Strikes, then Mortal Strike.
Leveling is much smoother than in Classic: more out-of-combat healing, Victory Rush, and better two-handers as dungeon quest rewards. Dungeon experience now comes mostly from their quests: take them all and share them to find a group. Wailing Caverns and the Ruins of Lordaeron have useful pieces. Mining and Blacksmithing level effortlessly alongside your quests.
Changes compared to Classic
- New area talent that dismounts.
- New talent that merges the weapon specializations and adds staves.
- New talent that enables Overpower on a target afflicted by Rend.
- A faster Slam that no longer interrupts your auto attack.
- 15 sec cooldown.
- Better attack power scaling, can crit.
- Can crit.
