I'm a long time member, but I never post anything, as I just like to read the informational threads.
I was more involved in the Supraforums previously, and I was a member of the T04R.com for a few years. Before anyone asks me if I didn't mistake it for a "GS F sport," no, I am able to distinguish the difference, as I sold my IS-F late last year.
Well, I was in Torrance-Gardena area driving by an unspecified warehouse when I saw what looked like an ISF coupe fully wrapped in black and white mosaic coming out of a drive way. I decided to quickly park my car and see what it was, but then came out a GS-F in USB. This was a surpise, so I decided to bust a U-turn and chase it down in my super fast Prius. I was able to pull up right next to the driver of the GS-F at a stop light to get his attention and asked if it was the new GSF. He laughed and said he's not sure if he's allowed to say anything. From the 20+ seconds of the encounter I had, I could tell the wheels were 19" mesh (as seen on the grey GSF in nurburgring), had full bucket seats in the front, and had the stacked exhaust outlets. It sounded just like the ISF, confirming the V8. Personally, the wheels looked somewhat plain for the car of that caliber, and it needed to have aggressive offsets.
I failed however on taking any pictures of the car, so I apologize. The covered up coupe also had stacked exhaust, but i really couldn't tell what it was.
Good luck to some of you purchasing this vehicle in the future. It sure was pretty in USB