The differences and new features are described in the file /exp/rcf/share/share/emacs/19.34/etc/NEWS.
The lisp files will be found in /exp/rcf/share/share/emacs/19.34/lisp. The site-lisp files are in /exp/rcf/share/share/emacs/site-lisp
Please try it out, and send mail to email@example.com with any problems you encounter using it.
If you are converting from a version of emacs prior to emacs-19.30, you will need to change your load-path in your .emacs file. Due to conflicts with the previous site-lisp files in /exp/rcf/common/lib/emacs/site-lisp/ , this path should not be added to the load-path. The default load-path in emacs.new already has the new site-lisp directory in it.