Samsung has been going out of its way to keep its Galaxy S III consumer base satisfied. They delivered the original Jelly Bean update in due time and as it seems, they are already working on an Android 4.2.1 Jelly Bean update for its third generation Galaxy S smartphone.
The latest I9300XXUFMB3 Android 4.2.1 Jelly Bean test firmware has been leaked and the official roll out of the final version might just be around the corner.
The Android 4.2.1 Jelly Bean for Galaxy S III is still under the testing phase and the latest update is said to come out with an improved ripple effect on lock-screen, new Android 4.2 lock-screen with widgets, day dreaming, new additions in notification center and voice command, which allows you to control various functions of the Galaxy S III.
Images from Android 4.2.1 test firmware for Galaxy S III
Samsung Galaxy S III Android 4.2.1 Jelly Bean test firmware is available in the source link below and the process of flashing your smartphone involves some risk and would void your warranty, so proceed with the instructions only if you are sure about what you are doing.