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?
In the bitcoin world, your translation is pretty spot on!
Frankly delivering within a couple of days of the promised date is closer to 3 months early (compared to competitors -- AM doesn't count since their miners are for entertainment purposes only).