13.3" intel iBook?
ThinkSecret
claims: "The 13.3-inch widescreen iBook is said to sport a WXGA resolution of 1280x720." (Probably 1280*768, at least we'd hope so...) The new model would replace the 14" model, the 12" model's form factor would be untouched. However, TS also notes that the 12" PowerBook will probably not be continued into the intel era. Rumours of a 13" widescreen iBook/PowerBook have a long history - and certainly Apple wants to further promote wide screens.