It might indeed have something to do with HHH/Brock. I remember reading awhile back that only a select few people (HHH, Brock, Vince, Steph, maybe a couple others) knew what direction the HHH/Brock angle was going. They made it sound like something surprising was gonna come out of that angle. And while some may feel the feud is overrated, WWE doesn't, so if it's them saying they have a big angle planned, this is probably it.