Shwmae
I wrote something in another thread, a while ago:
I think they are expecting a late January/early February beta release, and is estimated at 75% complete. The release time is just calculated from words translated, but I think they still have all the audio to do.
I quite enjoyed using Duolingo when learning Spanish. Its no replacement for conversation practice, but good to have as something to do on your phone if you have a spare few minutes to learn more vocabulary and structures.
Flynn