Zelany is slowly being ebooked:
http://www.amazon.com/dp/B00K7PCQWI
There's a couple of others too.
At least one agent started "publishing" some of his authors' backlist as the publisher. Seems to have worked out well for the authors and for him. I do find quite a bit of decent fantasy stuff coming out from indie writers too, but then, I read a lot of indies so I'm constantly sorting and finding stuff.