I used to use the Windows For Ruby Installer (http://rubyinstaller.org/)
in the past, but now I see that is no longer updated to reflect Ruby
2.1.
Are there any other options to install Ruby on Windows or am I stuck
with an older release?
You can compile it yourself if you have the tools.
Personally I’m just using 2.0 for now and I’ll migrate to 2.1 once the
installer is released.