We're right in the middle of figuring out exactly what it takes to add languages to the app. Especially when those languages require significant design changes (for example Japanese, Mandarin, and Arabic) we need to adapt the app fully before we can support languages with different scripts. So for the moment, we're going to avoid giving out defined timelines until we can be sure about them.
Be aware that we're doing our best to get everyone's languages out as rapidly as possible. Many of us are waiting for these languages as well.
Rest assured that there's lots of incentive for us to move quickly, but we also want to give our development team the time they need to ensure we are giving you only our very best.
In an effort to keep things as transparent as possible, we have our Fluent Forever Progress page, our Language Content Development Schedule, and our roadmap available, so that our supporters are as up-to-date as possible on things in the works.