Aero aid in above picture = "canard splitter."
Been trying to figure out what this unusual looking aero end tip. Here's one possibility, though what we are seeing on the Corvette is clearly a variation of the following version (not that I am liking what I am initially seeing).
This picture is from aftermarket company Stillen. Here is Stillen's definition of the usefulness of a canard splitter: "Front Canards help increase front downforce at high speeds. The added downforce stabilizes the cars chassis during hard cornering and increases traction for faster lap times."
This definition is totally consistent with GM's statement that the C7 Z06 is "the most track-capable Corvette ever, designed to deliver supercar levels of performance through unique powertrain, chassis and aerodynamic features."