Actually it has.
I have a good friend who is a translator for Wycliff.
All the “languages” have been translated...
there are some “dialects” they are still working on.
She said there are several interpretations about Matt. 24:14 with regard to whether it means all languages.
Anyway, we are closer.
There is also the two witnesses sent by God who we can be assured will be heard in all languages and nations through some means prior to Jesus return to this earth to reign.