According to SamMobile, this is a test firmware and not a final release. It includes new lock-screen, Daydream support, enhanced notifications, and revamped Settings UI.
The final and stable release of Android 4.2.2 is expected to reach the phone around June.
Check out the key changes below:
- Android 4.2.2 JDQ39
- New S4 like Lock-screen: Multiple Widgets, two unlock effects (Ripple and Light), improved ripple effect than Android 4.1.2, and ability to change clock size and set a personal message
- New Screen modes (From S4): Adapt Display and Professional Photo
- Daydream, Driving mode, actionable notifications, New Additions in Notification Center
- Completely revamped Settings UI (Tabbed interface – Exactly like the S4)
- Addition of Voice controls
- Gallery modes have white background
- Full screen Samsung apps, new S-Voice (from S4), smart switch widget
You can grab the download and flashing instructions here.

One reply on “Samsung Galaxy S III Android 4.2.2 firmware leaked”
Just flashed it looks good for a leaked version