Apple's yearly developer conference should see iOS 8, OS X 10.10, and likely some hardware.
Staples Begins Selling Apple Accessories in U.S. Online Store
Products available through the online store are currently limited to accessories, but do appear to include nearly the full lineup of accessories such as Smart Covers, power adapters, cables, headphones, mice and keyboards. Several more expensive hardware accessories are also available, including the Apple TV, Time Capsules, and AirPort Extreme/Express base stations.
MacRumors heard last month that Staples retail stores in the United States would carry not only accessories but Apple's full lineup of Macs, iPads, and the iPhone 5. We've since heard that Apple's full lineup may be limited to select high-volume Staples retail stores, with rollout tentatively scheduled for late March to accommodate staff training and store setup. We've yet to hear whether Apple accessories have already begun appearing at retail stores alongside today's online store launch.