The Apple "Tri-Book... multiple screen laptop ; As Steve Jobs stated before: Apple won't release a cheap 'netbook' so I guess they'll go against the grain and go for the bigger more expensive laptop; because 17" is just not enough..
The Apple "Gamedock"... the Wii killer or just another attempt to revamp the AppleTV ....
A Lego Mac mini... why nobody knows.. maybe to cash into the Lego Star Wars, Lego Batman, Lego Indiana Jones mania... my kids would die for one..
And finally, the "iCom"- a fancy alarm clock, digital picture frame and iPod Touch built into one... nobody definitely needs one of these....that's why it would sell.
I still like last year's rumors that never did appear at Macworld 2008... remember all the Macbook Touch rumors floating around the net.. still, I would buy one tomorrow upon its announcement!!!