No sooner than Lexus "announced" (sort of) that they will be branding their performance lineup as F, Edmunds has a video up and some potential new info about the car they are now calling the IS-F 500. Supposedly it's going to use the 5.0 liter V8 from the LS460h but without the hybrid gear, tuned by Yamaha to 425 hp.

Pics and full article here: http://www.edmunds.com/insideline/do...hotopanel..1.*