No mention of resolution, although they seem to compare only to DVD so high definition is probably out of the question, but digital distribution is getting a big boost this summer when Warner joins with BitTorrent to release day-and-date with their DVDs over the internet. The bad news is that the DRM will prevent any copying to DVD.
We'll see how well this works out, as BitTorrent is still very much the Wild Wild West when it comes to content. A quick search for HD on the website brought up our good friends over at mariposaHD...and lot of HDRips. Good luck with that piracy prevention Warner.
Disclaimer: Time Warner is the parent company of this blog and Warner Bros. Entertainment