This document summarizes a presentation on JRuby given by Koichiro Ohba. It discusses JRuby's current state, upcoming features, and demos. Key points include: - JRuby 1.1.5 was recently released with improved performance and compatibility. - JRuby 1.1.6RC1 is available and fixes many bugs while adding support for the Ruby 1.9 parser. - The GlassFish gem allows running Ruby on Rails and other web frameworks on the GlassFish application server. - A demo shows Redmine running on GlassFish using the GlassFish gem.