As part of the core cleanup for ColdBox 4.0, the internationalization aspects (i18n) have been moved out into their own module. Up until ColdBox 4.0,  i18n was a plugin, like messageBox, and Logger, and Validator. All of these plugins have been reworked into ColdBox 4.0 modules and are available on ForgeBox.

Without i18n being in the core, your smaller, focused applications that don't leverage i18n's features won't have i18n weighing down your server.

But, for the i18n users and internationalization enthusiasts, your i18n module is as easy as typing...

box install cbi18n

...into CommandBox.

All of the features That were available in the plugin are also in the module. We just modularized it.

For more info on the i18n module's features: http://wiki.coldbox.org/wiki/I18n.cfm (it's the wiki for the plugin, but the functionality is the same).