I doubt it. 8.3 Epilogue tells us Old Gods are gone for good, or at least their influence. (for now.) According to Magni anyway.
Plus, Bolvar isn't evil. He's more of a neutral evil. He has his role in the world, he knows his role, and he keeps to that role. Every time you meet him. When Horde players see him he says "You are neither dead nor damned, you do not belong here, leave.. or stay forever."
So what ARE they doing for closing entertainment this year? Kinda hard to believe they haven't announced anything yet.
*gutfeeling intensifies*
Agreed, but I think they'd shoot themselves in the foot. People are expecting a new class.
They could, if it's part of an expansion-long thematic, just like allied races were.
"By the way... we're gonna revamp the whole world, one patch at a time!"