They will, my answer has not changed. Like one guy said, the resistance to reissue it will cause it to become more expensive as Jag-Stangs become more and more scarce than they already are. And if anyone else becomes associated as a big name Jag-Stang user with enough hype around them, then of course the prices will dart up, there's no telling what the future may hold.
I could really See Fender doing the same with Cobain in the distant future that they do with Jimi Hendrix, Eric Clapton and SRV now. It just takes a "grunge revival" or something like that to head it off.