Your Google-Fu needs strengthening Grasshopper.
Try: "return king dvd november" and observe some 400,00 hits or so. :D
You'll find the theatrical version DVD release date is still May 25 (sooner than the August releases of previous installments). I have yet to read anything regarding the Extended Edition being released in anything other than November. Incidentally there is a rumour floating around about an August release for it, but even Jackson himself is repeatedly mentioning November.