Good question, Yaskaleh.
Unfortunately, I have the feeling that's what it will be. The use of "Warlords" in the title, while not a strong argument at all, still shows some Horde-ness as that title is only used by the Horde. That combined with the expansion happening on Draenor and possibly involving Grom makes me doubtful we'll get a lot of Alliance lore.
My biggest fear is that they redeem Grom and make him look like a super hero to the whole of Azeroth and Draenor. This coupled with Turalyon and Alleria probably being neutral gives me a bad feeling. But maybe im wrong and I certainlly hope I am wrong.
But if I am right, the Fist of Retribution shall strike!