No one ever said your order will be on you door on August 31st.
I am not a native english speaker, so maybe I have some misunderstanding what does "August delivery" mean. Could you please describe why "August shipment maybe if everything goes well" is equal to the "August delivery" I purchased?
Valle,
Sorry if I came across terse. The quote you used makes me sound like an ass

Sorry.
My statement comes from this post:
Dave stated back on Aug 2nd he hoped the first shipments to be out by Aug 31st. That does not mean all of them. But I believe they will be out quick. So far this is the best experience I have had with ASIC vendors.
https://bitcointalk.org/index.php?topic=251966.msg2854485#msg2854485Best Regards,
Mark