I have a strong feeling that the image of this coaster is purely an exaggerated sketch of what will be a rethemed Barnstormer. I truly believe that if the new Fantasyland expansion were to include a new coaster, it would have been announced as a major component (especially to help balance out with all of the princess material) of the project. While I like Dumbo, I am still a little shocked at the fact that this single attraction's upgrade has become a major focus of the expansion, especially considering the new dark ride and the additional meet and greets, buildings and meal locations.
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I'm with you on all accounts there. I don't think too much should be read into the concept art of the coaster.
It is strange how a massive E-Ticket isnt really gaining much attention. Even here on the forums it isn't getting much interest.