Think about it,

Why would they make you wait for someone else to review the entire feature set? (written by a third party)

What if there was something that a small miner or multi-unit purchaser would appreciate quite a bit?

It is possible that perhaps BFL will cut prices once they know what the features are. Perhaps not. All I do know is that BFL cannot reduce it's prices without pissing off their current pre-order customers. Nor can they give away more units for the same price point.

Hint: Why does Batch 2 cost more than Batch 1?
Because people would still be willing to pay more once they know what it is they are getting.