I've had this on pre-order for roughly a month on HD-DVD. I saw it on SD Discovery, and promptly turned it off so that I wouldn't spoil the experience
Gotta wait for the real thing!
I don't get Discovery HD (cause I'm cheap and don't believe in paying more than $100 to the cable company monthly). I only get NBC,ABC,FOX and CBS in HD because by law cox is supposed to send these unencrypted digitally. My TV has a digital tuner built in with a TVGuide program guide (don't user a box) so I get free HD without the silly box decoder and the extra price... Cox still insists that I can't get HD without a box and an HD subscription, hah.