We do not know the answer to your question Patriot77. We do have some useful, but at best peripheral info. We know that for the 2014 StingRay, GM initially limited sales to the top 900 Chevy dealers. We know of at least two of those 900 dealers that have been told you are not getting a single 2015 Z06. What we do not know is how many others in that 900 who have been told that info, and whether additional dealers will also be later told,"sorry, no '15 Z06's for you.
We do have a list of the top selling 86 dealers in the first quarter of this year:
Extrapolating from that list being on for 1/4 of the year, one should have sold about 60 StingRays this year to be in the top 86 dealers. Your dealer sold about 25 you estimate, so perhaps you dealer is number 240 (???) -- obviously just estimating here. Perhaps GM might limit Z06 sales to the top 500 dealers??? This too is just conjecture, for we do not have enough info to answer your question, other than to note that the greater amount of new Corvettes sales (whether that is solely based on 2014 StingRays as I believe, or partially or wholly based on C6 Z06 and ZR1 sales as "mjw930" believes, no one outside of GM knows). And, would not bet against mjw930, for he has a great track record on predicting the future.
Just too many unknowns at this time to give you a reasoned/logical "prediction", as frustrating as that is to all of us.