Check your stance and selected talents before tanking, and do not import an old Fury build unchanged. The official notes raise Defensive Stance threat and change Fury prerequisites.
Threat is not guaranteed aggro
Defensive Stance's bonus rises from 30% to 80%; Defiance grants 7/13/20%. Do not simply add them into a complete threat formula. Start with manageable pulls and watch target control and healer readiness.
Reckless Swings spends health
The talent costs 25% of base health. Your next four melee attacks generate five additional Rage each within eight seconds; cooldown is fifteen seconds. Base health is not maximum health. It is neither free nor immediate Rage, so consider incoming damage before using it.
Check prerequisites
Flurry becomes a three-point 10/20/30% talent without the Death Wish prerequisite. Bloodthirst now requires Death Wish. Bloodthrill becomes two points rather than five.
Coordinate targets and pull pacing, then use the dungeon directory. Historical builds are study references, not tested current recommendations.