Actually this is good news. The iMac and Mac-Mini when released at Macworld 2009 in January will have 1/2 gen better processors and software support.
When the Mini was first introduced with a Core Solo, it had performance a significant portion of the MacPro of the moment. When it went to Core Duo it was comparable in overall usability to the Pro, and then the Pro was updated to monster status.
I am guessing they will be talking about software a lot as usual, but this time the iMac and Mac-Mini will be rereleased. The MacPro will have some discussion pending release, or be quietly updated along with X-serve.
One thing is this is different from past years. The iMac is usually the star of the show. This year it is the Books.
Rocketman