Posted on FNRA facebook page. They aren't available on the license plate website yet
http://mvl.ky.gov/MVLWeb/PIServlet, the post says they need to get 900 orders before they start producing them:
Announcing our newest program - Kentucky license plates that each provide $10.00 to the NRA Foundation's Kentucky State Fund - we are now taking reservations and deposits for the 900 we need prior to them going into production! e-mail jlarowe@nrahq.org or call 859.363.7681 for more details or to order yours today!