Here are latest addition features that Android 4.3 available :
- OpenGL ES 3.0 : Enchantment of graphic
- Bluetooth Smart : allowing connectivity for small, low-powered Bluetooth 4.0 devices and sensor
- Multiuser account with restriction list : Create a multiple user account and given option to limiting the type of apps that each user can access
Here are the sample video of Bluetooth Smart and Multiuser account
As I said, nothing major in Android 4.3. Let's hope Key Lime Pie gonna wow us in future.