Our Snapdragon-rocking Xiaomi Redmi Note 3 unit runs on a Global MIUI 8 beta, which is built on top of an Android 5.1.1 Lollipop core. The MIUI 8 brings its own take at the interface and improves on its performance.
According to Xiaomis changelog, MIUI 8 comes with better text rendering, enhanced Power saving mode, new Notes app and Enhanced video editing tools.