I was at my Cannondale dealer today and they were opening a box of 09 catalogs. Wonder of wonders, C'dale has changed their geometry!
Highlights are: 4 sizes now instead of 5 on both the 700c and 26" models. Both models have the same lengths everywhere, but the 26 gets a 71 HA instead of 73 on the road.
Probably the biggest and best news is the 27.1 inch stoker TT on the "S" rear is gone. "S" stokers now get a 28.6/72.6 top tube.
The "X" front top tube goes from 60.5cm to 57.5. the"J" top tube goes from 62.5 to 60cm. Yes, the new J front is shorter than the old "X" front. The J front is paired with a "M" rear,which offers the stoker a 29.1/73.9 top tube.
Other changes are: the disc mount is located on the chainstay now, and it -looks- in the catalog that the lateral tube goes into the boom tube in front of the BB.
Lastly, headtubes look to be a little longer and the frames look to have more slope. I may be wrong about the slope, however.