Jelly Bean boasts better graphics rendering and reduces touch latency, among other new features.
Here is the new features of Android 4.1 Jelly Bean
1.Faster, Smoother, More Responsive
Android 4.1 is optimized to deliver Android's best performance and lowest touch latency, in an effortless, intuitive UI.
To ensure a consistent framerate, Android 4.1 extends vsync timing across all drawing and animation done by the Android framework.