Something not quite as exciting
I was sent an email suggesting what's actually going to be happening. Canon is going to release an official 5D Mark II/24-70 f/2.8L kit. It won't be an IS version of the lens.
That'll make the 24-70 a lot cheaper.
Is this good or bad news? Well it depends how you look at it. Is this a sign Canon is going to be clearing out stock of the 24-70 to prepare for an updated version? That seems logical.
For now, I'd say no 24-70 f/2.8L IS for PMA. I'll keep looking and asking though.