I have absolutely no idea. But I'm pretty sure Apple will stick to around the middle of the month for any possible announcements, because anything too late might send pre-orders (iPads) through to the next month, which would create the perception that it's shipping late or is being delayed. Too early would put it too close to the iPhone pre-orders and orders, which would lose perhaps some potential buyers of the rmbp as they have already just made a big purchase (unlocked iPhone) and probably does not want to buy anything soon, or will just buy a cheap pc laptop.