Anger ManagementAn Arms Warrior talent in WoW Forever: row 3 of the Arms tree (level 20), 1 rank, passive. Changed from Classic. Read from the WoW Forever beta client.
What it does Arms row 3

Anger Management1 rank · passiveRequires 10 points in Arms Talents (level 20). Requires Improved Tactical Mastery.Generates 1 Rage every 3 sec while in combat, and reduces Rage loss while out of combat by 30%.Changed from Classic. Classic rank 1: Increases the time required for your rage to decay while out of combat by 30%.
What changed from Classic
Classic rank 1Increases the time required for your rage to decay while out of combat by 30%.
WoW Forever rank 1Generates 1 Rage every 3 sec while in combat, and reduces Rage loss while out of combat by 30%.
Around it in the Arms tree
Gone from Classic ArmsAxe Specialization, Mace Specialization, Sword Specialization, Polearm Specialization.
Every Arms talent 17
From the WoW Forever beta client, checked in game with reader reports. Put points in Anger Management in the Warrior calculator, read every Warrior talent in words (Fury and Protection too), or see the racials, changed class abilities and Legacy perks.