'F,' as it turns out, stands for 'fast,' and will grace the trunk lid of Lexus vehicles that seek to do battle amidst the AMGs and Ms of the world.
The first F-inagled Lexus to make its debut will be a hotted-up version of the IS sedan, equipped with a 5-liter V8. What was originally assumed to be called the IS500, the newly dubbed IS-F will come with a revised version of the V8 that resides in the LS600h L and will produce upwards of 425 HP. Pricing is expected to come in around $50k, and is aimed squarely at the upcoming M3.
Other models expected to get the 'F' treatment include the GS sedan and a coupe version of the IS.
According to Automotive News, Lexus filed for a trademark on the IS-F and also for the 'F' logo above, however, Lexus has not confirmed the reports.
[Source: Automotive News – Sub. Req.]