Today, Sony began pushing out the much-anticipated Android 4.3 Jelly Bean over-the-air update to all its unlocked Xperia Z, Xperia ZL, Xperia ZR and Xperia Tablet Z devices currently located in the United States. In addition to the upgraded build of the open-source operating system, this update also brings a newer version of Sony’s Xperia user interface, plus a multitude of bug fixes, stability improvements and speed optimizations, together with the Japanese company’s newly released “Social Camera” app.