How does the live, real-time typing work in Google Wave?

Question

I\'m sure Wave doesn\'t poll the server every millisecond to find out if the other user has typed something... so how can I see what the other person is typing as they type? And

Answer 1

See Video Google Wave: Powered by GWT around at minute 55 (near the end)

Q: How you implement the persistent Connections, the long living http connections

A: Future Plan: HTML5 Web Sockets. Longer term. That's what we use at the moment.

Q: Is there a platform or library for this we can download and play with?

A: Not sure. Don't think so

P.S.: That's what he said. To me it did not make much sense ("future plans" vs "using at the moment"). Any native english speaker might want to verify if I transcribed it correctly?