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Yes you will have the same issue. I'm not sure if there is compatibility issues with minor versions but:
Created in Desktop 9.x - cannot be opened by Reader 8.x
Also, here is a kb: Tableau Reader and Tableau Desktop Compatibility | Tableau Software
I'm mostly concerned about the minor versions. It makes sense that it would not be compatible with major releases. Right now I'm asking a client to get their IT dept to upgrade them to Reader 10, and since it's a long process for them I'd hate to have to ask that for minor releases as well.