First batch was March+July then there was an April+July (I think both at 15K, at least April+July)
I am not sure if there were farmer choice left when the 10% discount started if so it was only for the latest unit of the batch.

July batch has been told to be a small batch probably around 50-100 and with the info provided by SP it will ship the last week of July.
August batch should come after that problably shipping by the 2nd week of August and due to the numbers I presume that it will be continously shipping until the last week of august depending on your position on the queue (april+august, may+august, farmer's choice, singles and group buy all mixed).