13.3-inch Widescreen iBook?

Think Secret claims the Intel-based iBook due in January will be a 13.3", 1280x720 WXGA widescreen notebook to replace the current PowerPC based 14" model.

ThinkSecret also claims that while the 12" configuration of iBook will remain, the 12" Power Book will be discontinued in the coming months.
The Intel-iBook has been rumored to be released at Macworld San Francisco in January.