Warrior talent · row 5 of Protection, from level 30 (25 with Talented 5/5) · Physical

Focused Rage

Reduces the Rage cost of your offensive abilities by 1/2/3.

Game files · build 1.60.1.70245Read from the WoW Forever beta client, build 1.60.1.70245.

Compared with Classic

Classic tooltip

Reduces the rage cost of your offensive abilities by 3.

What Blizzard said about Focused Rage, each line checked against the files.

Matches the files
Swapped the positions of the Bastion (Row 5) and Focused Rage (Row 6) talents.
Developers' note: We wanted to give players Focused Rage sooner to smooth out progression, as opposed to more damage from Bastion. This should smooth out some of the feeling while leveling as Protection before obtaining Shield Slam.
The files The client files still put Bastion (16538) in row 5 and Focused Rage (29787) in row 6. Blizzard's hotfix data captured on build 70245 moves Focused Rage to row 5 and Bastion to row 6, which is the swap.
Bastion Focused Rage Development Notes, September 24
Changed since
Focused Rage: (New row 6 talent.) Reduces the Rage cost on all offensive abilities.
The files Focused Rage was Protection row 6 in 70170, -1/2/3 Rage on offensive abilities (spell 29787). The 70245 hotfix moves it to row 5, a move Blizzard's Oct 2 post doesn't list.
Focused Rage Class deep dives: Priest and Warrior

69876 Sep 16First beta build we archived. No changes in the client files since.