The iTunes Store, App Store, and Mac App Store all appear to be experiencing some technical difficulties at the moment.
While many are now reporting that the issues have passed, some users have been unable to access the stores, with others reporting that the stores are failing to load content. Additionally, many are reporting trouble with downloading apps, music, and more from the stores. Difficulties have been reported not only on iOS and Mac, but also on iTunes for Windows.
Apple has not commented on the disruption, and their system status page does not yet note the issue. We will keep you posted as this develops.
The iTunes and App Stores also experienced an outage earlier this month, which Apple says was due to a DNS issue. That disruption lasted around 11 hours, and also saw issues crop up with some iCloud services.