Two weeks before release candidates, we (Community) will reach out to our community translators and ask them to update the translations in our projects. There should be assigned Pentaho team member(s) with time allocated to handle the influx of translation contributions the week of the build.
Our translators are excellent candidates for read\write access to the Subversion repository. Translation merges are tedious, and our current translators are long time contributors who can be trusted. This of course should be on a case-by-case basis.