I actually sent an email to customer care and this was the response:
Thank you for contacting Walmart Sample Box Customer Care.
The Summer Box has started billing and shipping. Due to the volume of Beauty Boxes we send out, they are sent in waves from 6/16 to 7/9 and you could receive your box anytime in that timeframe. I checked your account and your box has not shipped out yet so it will be in one of the two waves remaining. Once it ships you should receive tracking information.
Please let me know if you have any other questions or if I can be of further assistance.
So it looks like we are still waiting on shipping for some of the last waves of folks..
Thank you for contacting Walmart Sample Box Customer Care.
The Summer Box has started billing and shipping. Due to the volume of Beauty Boxes we send out, they are sent in waves from 6/16 to 7/9 and you could receive your box anytime in that timeframe. I checked your account and your box has not shipped out yet so it will be in one of the two waves remaining. Once it ships you should receive tracking information.
Please let me know if you have any other questions or if I can be of further assistance.
So it looks like we are still waiting on shipping for some of the last waves of folks..