To be honest, I don't think any documentation has been updated for 6.0 from 5.5, we've just not had the time yet.

That said, as far as I am concerned, DSLs remain in 6.0. We have continued suppprt for them in Drools Workbench (what was called Guvnor, but more about that soon).

DSLs are basically text templates and substitution. A DSL can contain any text and hence could be defined for any locale. This is already supported.

What there is not, in 5.5 or 6.0, is the ability to define multiple DSL sentence templates for a single DRL fragment; each representing a different locale.

This could be implemented in Drools Workbench but it is not scheduled for 6.0. Drools itself wants to find a better, natural language, replacement for DSL but as far as I know not for 6.0.