Apple's online store in the US was once again unavailable this Tuesday morning, though the online shop front is back in operation now.
Customers attempting to visit the store were greeted with the customary: "We'll be back soon" sign. Not all Apple stores were affected, the UK shop remained open throughout. However, the store is back in action once again at this point.
That Apple's US store is unavailable doesn't always mean new products will be introduced, but it is often a sign. We're looking through now to seek out any changes.