Studio Canal seems to be about to release a High Definition (HD) DVD of Kurosawa’s Ran on March 5th, 2007. I may be wrong here, but this might just be the first HD-DVD release of Kurosawa’s material.
Details are scarce, and Studio Canal’s website doesn’t seem to mention the DVD at the moment.
Thanks to Master Thief for digging this up and bringing it to my attention. I’ll keep you updated if something new pops up.
Update: Master Thief notes (scroll down to comment #6) that the release has been delayed until May 21. Note also that the release has no English subtitles.