The QT Archives has some long awaited info on when a combined Kill Bill movie & DVD will be released from Tarantino himself:

“It will be Kill Bill the Japanese version – the four hour movie all together with an intermission in the middle. It will probably be the first release from Miramax’s new company, first at cinemas and then on DVD. It will also probably get a higher age rating. We had to cut it when Miramax was part of Disney but now we can do whatever the fuck we want.”

No dates on those releases yet, but I’d expect something before the end of the year.