I've put ri v0.6 up at

   http://www.pragmaticprogrammer.com/ruby/downloads/ri.html

The major change is the inclusion of a 'contrib' directory, which
currently includes two different ri extensions for Emacs. I'd be
interested in collecting other extensions.

For extension writers, there's also been some work on the pluggable
output modules. These are now passed far more context, giving you more 
control on the output.

I've also marked the release as 'stable'-- I'm not aware of any issues 
with it.


Regards


Dave