I would definitely qualify that as rumor.
Is some of the basis for it legit? I believe so. There is--let's call it a faction--that would perhaps very likely do almost exactly that but last I heard it wasn't likely and there are elements that would probably still object. (Which, in this biz, means nearly nothing.
) (Nor of course am I in the loop but I ocassionally come within sniffing distance.
)
As for HB being the biggest event? The most hyped. The most appealing. Perhaps. But not the biggest. Not even close. That remains WC.