Hi Didier and Mark
thank you for raising this.
Our plan to to release a version 0.1 (very basic) before the end of Q2 2014, i.e. before the end of June. There is a fair amount of information about the scope and intended target audience at: https://community.adaptlearning.org/mod/forum/discuss.php?d=124
The Adapt Framework has been built to enable a course to accommodate multiple language versions. However, this functionality will not be built out fully in the first few releases.
In our experience of working with translation agencies, they tend to be very happy to be given the JSON files (or even the entire course) and will make changes in the files directly. For now this means that a copy of the course would be created.
We're considering specific translation 'export' functionality (e.g. to XLIFF) for version 1.0 as a nice to have requirement.
Keen to hear feedback from the community on this point.
Hope this helps!
Sven