The leadup quests sound very Warrior related, the position is obviously Rebellion related. Saurfang did swear in Northrend that he would take Garrosh down should he ever lose sight as a Warchief.
I'd love to see a Warrior quest line but I doubt they would send Alliance warriors to Orgrimmar, and I doubt they would make 2 separate quests for both factions.
I'm stumped, but very eager to see where this is going.
Edit: Actually, did anyone else notice WHERE in the database these quests are? Quests > Classes > Warrior. Seems like we're getting a quest. Wonder what they're doing with Alliance warriors..