This has been addressed a few times, it's still planned to be by the end of October on purpose, not by the beginning. Keep in mind that for example August full rigs commanded a $11,000+ premium over October ones so I think Bitfury will deploy as it was planned without damaging its highest paying customer base. This is exactly the same fair policy that other companies, such as KNC and Hashfast follow on purpose. Otherwise, if Bitfury manages to ship October orders by end of September, will Bitfury refund a portion of the premium to August customers? No, right? If anyone wants to receive product earlier, they need to pay the premium that corresponds to that time difference. Pretty simple. :p
I think 400Gh/s for Aug delivery was 19kusd maybe I am wrong.