Not sure, it just says "The ES SportDesign is a visually jazzed up version of a vehicle known for understated elegance. Black birds-eye maple interior woodwork, channeled spoke wheels, and two new exterior colors give it a sporty look inside and out"
No mention of the size. My guess is they'll be 16 inch exact same size as the normal wheels to save on re-tiring costs, similar to the wheels on the GS Sport Design (same wheels, different finish). It doesn't seem nearly as complete a package as the IS or GS which list titanium lamps, etc.