On June 27, 2012, at the Google I/O conference, Google announced Android 4.1. Based on Linux kernel 3.1.10, Jelly Bean is an incremental update with the primary aim of improving the user interface, both in terms of functionality and performance. The performance improvement involves "Project Butter", which uses touch anticipation, triple buffering, extended vsync timing and a fixed frame rate of 60fps to create a fluid and "buttery"-smooth User Interface. Android 4.1 Jelly Bean was released to AOSP on July 9, 2012, and an OTA update for the Sam-sung Galaxy Nexus to Android 4.1.1 was released on July 11, 2012, making it the first device to run Jelly Bean. Features of Android 4.1: V sync timing across all drawing and animation done by the Android framework, including application rendering, touch events, screen composition and display refresh Triple buffering in the graphics pipeline Enhanced accessibility Bi-directional text and other language sup
