A couple of things have to happen next. One is that the acceptance has to get the recogitio from Rome. That's guaranteed to happen, but Rome does things at their own speed. (Nothing happens in August, for one thing, because everyone goes on vacation.)
Then the books have to be printed, and every parish has to order their copy/copies.
My guess is maybe next Easter, but more likely 1st Sunday of Advent, 2007.
Thanks! The kids were worried that we'd go to Mass on Sunday and not know what to say. They'll be relieved that we don't need to assimilate "... And with thy ghost!" until Advent '07!