Can anyone confirm whether MacRuby framework shipped with Lion? Somewhere I read that Apple wants to include macruby framework in OS X Lion. 

Did they include it?
Macruby is there as a private framework, and you can call it as such using code. For more elaboration, you should ask your question again on Stackoverflow. 

http://redwoodapp.posterous.com/macruby-for-the-desktop-six-reasons