Is Ruby really an interpreted language if all of its implementations are compiled into bytecode?

Question

In the chosen answer for this question about Blue Ruby, Chuck says:

All of the current Ruby implementations are compiled to bytecode. Contrary to

Answer 1

As for the information I got from RubyConf 2011 in Shanghai, Matz is developing a 'MRuby'(stands for Matz's Ruby) to targeting running on embedded devices. And Matz said the the MRuby, will provide the ability to compile the ruby code into machine code to boost the speed and decrease the usage of the (limited) resources on the embedded devices. So, there're various kind of Ruby implementation and definitely not all of them are just interpreted during the runtime.