At the moment, we have support for Spanish (Latin American & Castilian), French, Spanish, Italian, Russian, German, Portuguese (Brazilian), and Korean. Following that, we're planning to work on perfecting and releasing English, Dutch, Hebrew, and Arabic. When those are all finished, we will be adding Japanese and Chinese (Mandarin). When these are all finished, we'll begin working hard on our community-sourced support for any language.
Quality is really important to us, which is why we don't have exact dates for these languages just yet (and the order is subject to change). We want to make sure we've got them as polished as they can be before we release them in the app, but we promise: we're working as hard as we can to get them out as fast as possible.