Got a reply from Mike at BBTS:

Thanks again for your preorder! We do our best to process preorders by the date they were received, according to each item. At this time Hasbro should be sending the rest of our shipment(s) later this month, at which time the remaining preorders on file should be filled accordingly. I apologize for this delay, and we do not anticipate any allocation issues happening with this particular wave like past waves.
So, now they process orders according to the date they were received? Sounds like bollocks to me.