OSNews put online the english version of an interview that my buddy Koki from JPBE.net did recently. You can find the original version right here.

In it Phipps talks about the beginning of OpenBeOS, some of the devs involved in the project and talks about the other OSS projects, as well as Zeta. Also, though not confirmed, he reveals the intended date for the first WalterCon. So don't wait any longer and go read it.