Akatombo Works has released a 1/72nd Lockheed XF-90 Penetrator resin kit
Sources:
http://akatombo.world.coocan.jp/
http://akatombo.world.coocan.jp/garage/XF-90 .htm
V.P.
Anigrand is to release in August 2015 a 1/144th Lockheed SR-75 Penetrator (Projected successor to SR-71) resin kit.
Source: http://www.anigrand.com/future_releases.htm
V.P.