I found this in a page of an old magazine (probably 1982-1983), in a article for Red Air Force. It seems to be a swing wing MiG-25, saying that this would be the successor of Foxbat. But the final MiG-31 Foxhound was very similar with MiG-25 in appearance (except some details). Does anyone knows something? I Know that West was not aware about Soviet projects until see the real thing, because of the notorious Soviet secrecy, so I believe that this aircraft is what West thought about the MiG-31. MiG had designed the swing wing MiG-23/27 and there were also the Su-24 and Tu-22M, so Western analysts believed that MiG-31 would be a swing wing fighter. Anyway, this would be a very good Soviet Never Built (if real) or a good Soviet AU aircraft (if fake). And say fake, because reference below shows wings without the dogtooth.
Personally, I first read an article for MiG-31 in a 1990-91 magazine and wondering since then for this fighter.
There is a reference here :
http://forum.keypublishing.com/showthre ... 3-MiG-24BN