That Sabo is alive. I'm certain of it.
Why would Oda have shown us Whitebeard and Ace's graves in the cover if not to draw attention to the two cups of sake in front of Sabo's grave?
This coupled with the mysterious wounded person Dragon brought on board his boat during Luffy's flashback and the drawing of Sabo as an adult have me convinced.
I realise Oda has said that Sabo lost his life, but I have a feeling he's talking metaphorically to throw people off and that Sabo 'died' and is now someone else.
Also, Zoro and Sanji can use haki confirmed, hurrah.
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