^Agreed. The teaser also shows nothing about the car and they haven't even issued a press release.... just that section under the "Future Vehicles" section of the website, which you have to dig for.
They're being more secretive about this car than any other debut in recent memory. Every new debut in the last few years has had a teaser showing some element of the car itself - usually headlights, grill, tail lights, etc.
I'm thinking and hoping that Lexus retunes the 5.0L V8 for more torque and thus, maybe a little less horsepower. Being based on the LS platform, I'm expecting the standard LC to have a slightly more relaxed attitude, whereas the F cars that use the engine in 467/389lb-ft guise are more high strung. Also, a big part of why the German cars feel so much faster is their torque advantage. I'd personally like to see something like 450hp and 425lb-ft of torque - that'd be a little more usable in daily driving, probably a tad smoother, and make the car feel faster off the line.