To be clear, it's just the frontend for now. Frontend as in the client-side stuff and the backend stuff required to directly support it. The core backend code that manages the games and what-not is not currently available, though it looks like that might happen eventually.[1]

All that said, I'm glad to see this happen!

[1] https://forums.online-go.com/t/the-online-go-com-user-interf...