Pardon the double-post, but quite a bit has been revealed about the upcoming data book One Piece Green:
-Full title is One Piece Green: Secret Pieces
-Has all 12 of the current splash page ministories included, as well as several of the other animal-themed splash images
-Has 4 new Straw-Hat Theater omake chapters
-Oda reveals various sketches and behind-the-scenes stories about his works
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New World's major forces introduced
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Over 80 secrets revealed
Apparently, a couple of those 80 secrets were already teased, partiularly the explanation of the crossed-out "S" on Ace's tattoo and Luffy's shipwright sketch from the Water 7 arc looking like Franky. But yeah, I kinda doubt that anything particularly major will be revealed.....
Oh, and cover:
http://www.turboimagehost.com/p/4595523/01.jpg.html
Comes out November 4th, folks!