It's only available to private beta testers at this time. A public beta should be out "when it's done" or "soon", the standard Jelsoft representative times.
i dont know what happened when they went from vb1 to vb2, but is it just me or is this taking a long long time, i remeber hearing about vb3 back in august, and the talk was like it would be out by october... which of course wasnt true, but this seems to be taking extremely long