As of now, we don't have any further details from Chevrolet about what to expect from this Special Edition. Our guess based on Corvette special edition history would position it as either a Stingray- or Z06-based car with some type of appearance package on it. Holding the reveal at a race could signify it being a racier version of a normal Corvette, though there are already scads of those with models like the Grand Sport and king ZR1. Whatever it is, expect it to be limited in number and cost a good bit more than whatever Vette it's built on.
This news should excite anybody still pining after the traditional front-engine Corvette, even though most the excitement nowadays is surrounding the upcoming mid-engine C8. We'll have to wait a week from today to actually learn what's coming our way, but more Corvettes in the world is never a bad thing.