In advance of its keynote presentation at Google I/O 2013, Android 4.3 has been confirmed in a search listing on Google's developer website. Mention of the next iteration of Google's mobile operating system has since been removed (it was live just long enough to be cached here), but it's a safe bet that we'll see the next version of Android at today's big event.
Android 4.3 is still largely a mystery, but the update is expected to support Bluetooth Low Energy (BLE) and the OpenGL for Embedded Systems 3.0 graphics specification. BLE would help conserve battery life on mobile devices that connect to peripherals like smartwatches and speakers, and OpenGL allows for advanced visual effects in games and graphics-intensive applications. We'll find out for sure when Google kicks off its keynote at 9AM PT / 12PM ET — stay tuned to our liveblog for the latest updates.