Apple's annual developer conference in San Francisco.
Image of Redesigned Apple USB Power Adapter Surfaces [Updated]
While it is possible that the product in the image could be of a fake, the charger does have the signature "Designed by Apple in California" text along with other applicable information and logos. The user also shows another image of the new Lightning cable with its reversible USB connector, which has been spotted in a number of other photos and even a video throughout the past few weeks.
If both new products turn out to be real, it is possible that Apple could ship a new Lightning cable and new USB power adapter alongside this fall's expected lineup of new iOS devices, possibly starting with the iPhone 6 next month.
Update: As pointed out by a user in our forums, the USB adapter shown in the images carries the same design as Apple's current 5W USB Power Adapter sold in Australia. However, the prongs on the new adapter in the photo are of Type A used in the United States and many other countries, perhaps indicating that the design could be soon applied to Apple's other power adapters in different countries.