I seen that patent mock up a while ago, although not your graphic representation.
It was a Mac style docking station for the Macbook if I remember correctly.
As for people who are continually hanging off and hanging off, simply because they have a burning desire to have the latest model, I need to ask why?
People who've been waiting since January, fair enough ... but there's people on here who've been quoted as waiting since October or November, which is just ridiculous when you consider that they're not upgrading because of what's being posted on here.
The only way to buy a new computer is to look at the specifications of your current model, look at the options available on the new models, and decide which system will do the job for what you need a computer to do for you.
Do you need it for Graphic Design? Do you need it for Photo Editing? Do you need it for Web Design? Do you need it for CS3?
Worrying about having an obsolete machine always comes across as a little obsessive. For example, my Uncle bought his first ever iMac (the first Alu & Glass 20") in January 2008 only to see it upgraded in April 2008. He phoned me in a tirade that Apple had "conned him", and I had to tell him to get a grip and accept that his iMac was obsolete technology before he even turned on the power.
Some people, and it's a common trait among techies, need to have the latest stuff. They need to be able to come on the forums and tell everyone what they have, and they feel a sense of pride in having the "best" there is.
Personally, I've come to accept that if a computer does what you need it to do, if it represents value for money, and if it substantially upgrades what you currently use, then buy it.
My 2.4GHz Core 2 Duo iMac cost me just £612 through a discount deal my Father in Law was allowed access to through his work. As someone who's using a 17" Core Duo 1.83GHz iMac, that gives me the computer I feel meets my current needs, so I'm happy.
I know there could be a unibody redesign for the iMac while retaining the original look. I know the screen could move to LED in line with the Macbook and Macbook Pro. I know there's going to be speed bumps and slightly larger Hard Drives in the new models. However, there's going to be one hell of a larger dent in my pocket than £612 if I want one, so I am more than happy.