In a promotional video announcing Android 4.4 "KitKat," a Google employee may have just accidentally disclosed the Nexus 5. A screengrab from the video in question, pictured here, shows the employee holding a Nexus-marked device, standing next to another one holding the more familiar Nexus 4.
Even compensating for the depth, the device appears to be 5-inch class. One can also make out the gray dot at the bottom-end of the device, which is definitely part of the LG logo. The other big detail on the device, of course, is the large camera lens, pointing to a design focus on imaging. Google has since removed the promotional video from YouTube, but you can check it out here.