Because the Penryns will drop onto the existing Santa Rosa motherboards without a problem, and because HP/Dell/Lenovo/Acer/... will have the 3GHz laptops from day 1?
So you're basing this prediction on what every company besides Apple would do?
Intel will always have something better coming down the pipe, Apple will look foolish if they continually fall behind because they're waiting for something better.
That hasn't stopped them from doing precisely that so far with their current product lines. Come on dude! And all you 'mini-tower' types: examine Apple's history, realize it's blindingly obvious they're never going to behave like a 'normal' computer company, and either accept it or move on.
TV and add DVR/TiVo support, that would be a kick ass product! Another kick ass product, as many of you have stated, is a mid-tower. Powerful enough to get some serious stuff done, but not quite Mac Pro. Maybe 2 optical bays, 2 hard drives & 1 desktop proc. Maybe SLI/Crossfire support. The Mac Pro could probably add a few more optical bays and definitely SLI/Crossfire mode. But from what I've seen, fat chance. Apple would probably say that it either isn't doing well enough or doing too well and eating sales from the other products.