Hi Huabin,
We had some thoughts on this but it's not a priority at this moment. We may stick with Go for the time being, until we've ironed out some more API details.
-Srdjan
P.S. Since we generate the client/server stubs, and do our own serialization, it's actually not that difficult to generate stub bindings in different languages for cross-language support. But we don't yet support languages other than Go.