It's impossible to say if it's in the business or not, but from what it appears on the official website they seem to be out, because the latest news is from 2006 which is 6 year ago. There is the possibility to download the installation package through the official website, but that's it.
A contact option is placed on the top page which links to an email. I believe that's the only way you can get in touch with the developers: monsenrm@eaglelander3d.com