We were quite approving of No More Heroes 2: Desperate Struggle when it came out and had a good time overall. However, the game doesn't address what happened with Travis Touchdown inbetween the original No More Heroes and the sequel. That's where the Japanese "Hopper's Edition" version of the game comes in.
The Hopper's Edition comes with your usual goodies such as premium box, art book, and soundtrack CD. Also included with the Hopper's Edition is a movie called No More Heroes 1.5 that's written by series producer Suda51. Going by a rough translation, it appears that this film will explain what when on during the three years Travis was absent from Santa Destroy.
If that wasn't enough, those who pre-order the Hopper's Edition will score a bonus Erotica Comic book. Glean what you will from that title but it seems to be just a comic book-style recap of the first game. Both the Hopper's Edition and a standard version of NMH2 will be released in Japan on October 21.