Is there REE support?

On my Jenkins server I have a Rails app that uses REE (using a gemset defined in a .rvmrc file). However, it never shows in the list of available Rake versions (specifically for wanting to run rake notes after a build).

Looking at some of the code, I did notice that it looks for Ruby executables called "ruby" and "jruby", only. Does this mean REE is not supported?
