Default Ruby for New Apps is Now 2.2.4

Change effective on 29 January 2016

The default Ruby for new Ruby applications is 2.2.4. You’ll only get the default if the application does not specify a ruby version.

This is only the second time we’ve changed the default Ruby on the Cedar stack. Going forward, the default Ruby will now be the latest release of Ruby but one minor release behind. For instance, when Ruby 2.4.0 comes out, the default Ruby will be set to Ruby 2.3.x.