GameStop is sending out emails for those with pending Exclusive Black Series 6" Supreme Leader Snoke (Throne Room) preorders, stating that there is a delay. I also contacted customer support about their Black Series 6" Battlefront II Inferno Squadron Agent figure as well and it has suffered the same fate. Below is the official email being sent.
"We are contacting you in regards to your GameStop.com order #777777777777 for Star Wars: The Black Series - The Last Jedi Supreme Leader Snoke (Throne Room). Due to an issue with the manufacturer, there has been a slight delay in your order and it might arrive later than expected. We apologize for any inconvenience or frustration this has caused you. At this time, we do not have an ETA for your item but rest assured, your order will be delivered as soon as possible. We appreciate your business and patience.
Again, we apologize for any inconvenience this may have caused you."