This doesn't seem right to me. As has been pointed out, it seems like 18-24 months are needed if you're still forming the design team. It would be my guess that the highest demand for Apples this coming year would be the Intel models (iirc, Jobs said this was going to be a "transition," not an overnight complete change of all machines).
That leads me to think that the prosumer machines would be the first to switch. Apple is notoriously reluctant to allow anything to cannibalize prosumer sales -- to the point of committing serious design atrocities in the past (crippling bus speeds, et cetera). It would be my guess that the pro machines would be the first to switch, but I could always be wrong -- there might have already been some Apple declaration to the contrary. Don't shoot me, I'm just the prophet.
So this seems really bad to me, if I'm reading it correctly. It seems that they're not as far along as we would hope with the first Macintels, and at best they might be buggy or poorly-designed machines. Since I'm wanting to get a solid pro machine this time around, I'm pretty damned unnerved by this.
There are other alternatives -- that the Sony folks are there for the iBook or even a miniaturized iBook or (don't kill me) even a more portable solution. Sony makes tiny things, and Sony makes tiny things well. This could even be a part of the video iPod rumors. What if, for the sake of argument, Apple wanted to make a widescreen (480x720?) clamshell iPod roughly the size of the HP Jornada clamshell PDAs? Sony would be the people to go to for this, in my estimation. That knocks out the 2" iPod screen that no one wants to watch a movie on, it's roughly the same size, it would require laptop know-how, and it satisfies some video iPod rumors.
Sorry to drag iPod **** up -- I honestly don't give a **** about iPod innovations, and I'm generally the last person to make baseless prophecies that are probably immensely unrealistic. This might be completely out of desperation, because I see the alternative (Apple hiring Sony people to help with laptop design) as an absolutely frightening sign for Apple's future.
Either Sony is helping with a sub-laptop or a video iPod-esque thing, or we're not seeing bugfree macintel laptops for a couple years. Those are the only two things I see. I'm scared :-(