I just took a trip to Italy with an HC1 and am going to be distributing my video on DVD to friends and family.  But I also want to render out my project in Vegas for high definition output when it arrives.  I find that I do not know what format to render it to for Blue Ray or HDVD.  I am assuming that it will still be MPEG-2, but I don't know if I should render using the HD 1080i 1440x1080 or HDV 1080i 1920x1080 templates.
Any information about high def. rendering formats for Blu Ray and HDVD would be appreciated.  Thanks.