Even the latest version (4.2) of DVD Studio Pro does not address BluRay authoring.
Toast 8 has some BluRay features but is not a complete authoring solution.
Evidentally, Apple is waiting for some event to playout before embracing totally, either HD-DVD or BluRay. Since there are no commerial HD-DVD computer based burners and BluRay burners are everywhere, there is something going on, that seem to maake no sense to me.
Is Apple so dediicated to HD-DVD ONLY that they will forgo BluRay to the exclusion of their customers HiDef DVD experience?