A picture is worth a thousand words (and questions), but that is all we have at this time.
Further pictures can be found here (Their images do not allow hotlinking):
http://forum.mazda6tech.com/viewtopic.php?t=2507
Wagner is producing this upper intake manifold for the oval port 3.0Ls and will have a price and full specs and of course more pictures very soon. Keep your eye on Wagner..