Before Kill Bill was broken up into two volumes, it was originally intended to be one long movie with an intermission.
Looks like that uncut single version is on the track to being released. Straight from the mouth of Tarantino:
“We’ve actually added some things to it. We did a whole little chapter that I wrote and designed for the animated sequence, that we never did, because we figured, back when it was gonna be one big movie, it was going to be too long, so we didn’t do it. So when we were talking about re-releasing it, they asked is there anything you can put in, and I said no I put everything in there, but… there’s one sequence that we wouldn’t even have to shoot! So we got together with Production IG and did it, and it’s really cool. So it’s this little seven minute sequence, it’s really cool, it’s in the O-Ren chapter.”