There are many Joomlapolis driven projects that can be localized to other languages. This localization is accomplished using CB Language Plugins that are installed via the CB Plugin Manager (just like all CB plugins). "Official" localization projects are organized on our transifex area and are managed by community volunteers.
If you don't see your language project area or forum category it means that no one has volunteered. If you are interested in organizing your specific language plugin just send
Nick (ana nant)
a private message expressing your interest.