Verizon surprised everyone by becoming the first carrier to roll out the Android 4.3 update for the Galaxy S4, and now Sprint is following in Verizon's footsteps – Galaxy S4 users on Sprint's network can now upgrade to the latest version of Android over the air, and get new features such as faster performance (thanks to TRIM support), Galaxy Gear support, improved camera firmware and features, KNOX functionality, and other minor improvements and tweaks.
The update is rather large at 537MB, so be sure you're on a Wi-Fi network before downloading (unless you're on an unlimited mobile data plan, in which case you have nothing to worry about). As always, the rollout is gradual so you might not see a notification for the update immediately, though you can keep checking regularly from the Settings » About phone » Software update menu.
