Ruby 2.0 today with BitNami Rubystack
The next major Ruby release (2.0.0) is currently planned for February. A preliminary version (Ruby 2.0.0-preview1) has been made available by the Ruby development team in order to give developers a chance to test their projects with this version and see if they are “Ruby 2.0 ready”.
BitNami Rubystack with Ruby 2.0.0 is completly self-contained and it will not conflict with your current development environment. You can download it, give a try and safely remove it when you are done. It can be deployed using all-in-one free native installers (for Linux and Mac OS X), virtual machines and Amazon Cloud Images.