The Apple Store is currently closed for an update, a sign that often (though not always) means Apple is about to introduce a new product or service. That said, Apple seldom introduces new products on a Monday, so stay tuned to The Mac Observer for any updates to this story.
Update: The Apple Store came back online at approximately 12:15 PM EDT, apparently without any new products or services.
The Apple Store: "Weill be back soon."