According to The Car Connection, the IS500 will probably receive the 4.6-liter V8 from the new Lexus LS460 (wouldn't that make it an IS460?), which would up the power to around 380 horsepower.

We can always count on Nihon Car & Bike to keep us abreast of the goings on in Japan, and its latest scoop is what we think are official shots and specs of the forthcoming Lexus IS500. While these ...