I am also very disappointed by this. I am mainly interested in learning Mandarin and Japanese. But Duolingo is so good that I decided to start learning Spanish

I am also very disappointed by this. I am mainly interested in learning Mandarin and Japanese. But Duolingo is so good that I decided to start learning Spanish with it till they support Mandarin or Japanese. Now it's one year later, still no Mandarin or Japanese and I ran out of motivation for Spanish a long time ago.