http://www.nintendoage.com/forum/messageview.cfm?catid=6&threadid=64233&StartRow=21

At the link i provided this guy HAS THE E3 BETA Because if you look carefully you will see it (You can correct me if I'm Wrong though)
Nope just store demo
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Here's my MvL Hacking thread

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#HakingNoMore

All the dumped demos were built after the USA version. It is possible that the three undumped demos that are "in the wild" are prototypes, but it is unlikely.