Is it possible to receive devcoins for translations into French, for example?
Not yet, primarily I think because there aren't enough people to be able to vet/edit any writings not in english. You can offer to translate from french to english, if anybody is interested in taking you up on it:
http://devtome.com/doku.php?id=devtome_translatorsI would talk to Unthinnkingbit. This is not available yet, but I believe we do need a program to make devtome readable and submittable in all languages, and we should have a team of translators to work on that.