Domestic orders shipped via USPS come with delivery confirmation numbers, which are distinctly different from tracking numbers (Such as you would get with FedEx service, for example). The majority of the time, the delivery confirmation system will only be updated
after your package is delivered and has a delivery scan done to it. The message you are currently seeing is what you see when a label is printed out and when and Origin/Acceptance scan was not done on the package (which is the vast majority of the time). It will be updated once the package gets delivered.
Regarding your specific order, no need to worry; your order has been shipped and will arrive shortly. (And yes, I can confirm that I did indeed ship out your x2.6CE on Thursday via USPS first class mail
)