Some kind, Korean speaking soul has just posted a detailed list of the special features included on the four disc Old Boy Ultimate Edition over on the KFC boards. There are a lot of them:

The film itself, remastered for best possible a/v quality, with four commentary tracks; a 50 minute making of documentary; project notes; actor interviews; a feature on the art and music departments; 25 minutes of deleted scenes; a chat session between director Park and some fans; a Park-directed music video; an unreleased Chan Wook Park short film; another short film recommended by Park; a long, interactive feature called The Story of Old Boy; the soundtrack CD; and, finally, a fifty page book.

Now here's the kicker: this edition will be available by pre-order only. The manufacturer will accept orders only until September 13th and will manufacture enough of those hand made copper cases as are needed to fill those orders only. You will NEVER be able to buy this set in stores anywhere. YesAsia are now accepting pre-orders here. Their unit cost is a bit higher, but they ship for free which will make this a fair bit cheaper from them than from any of the Korean based retailers ...