Eugene and I have uploaded FreeMat 4.0 to sourceforge. Until the
website gets updated, you can get it from here:
http://sourceforge.net/projects/freemat/files/
I also don't have a 64 bit build for linux yet. We will try and get
the web site updated with release notes in the next week.
FreeMat 4.0 is a significant update from 3.6, and includes many
features that are designed to make it more compatible with Matlab. We
will be putting together a porting guide in the next couple of weeks
also.
Enjoy!
Samit