> Can some one come clear about what exactly is Rubinius and how this
> project is going to be very helpful to us....?

An interesting part of the rubinius project is the development of a
full set of specs for the Ruby language, which will help in the
development of other implementations, and give a canonical description
of how the language behaves :

http://rubinius.lighthouseapp.com/projects/5089/specs-overview

Chris