Samsung Galaxy S Duos 2 is now official on Samsung India website and will soon be available for purchase. Interested people in India can sign-in to get notified when it's available.
Samsung Galaxy S Duos 2 is a dual-sim android smartphone with 4" display, dual-core processor and runs on Android 4.2 Jellybean.

Samsung Galaxy S Duos 2 Specifications

• 4" 480 x 800 (WVGA) display
• 1.2 GHz dual-core processor
• 768MB RAM
• 4GB internal storage with microSD card slot
• 5 MP camera with LED flash and 720p@30fps video recording
• Android 4.2 Jellybean
• 1,500mAh battery

The device was unveiled in Hungary but Indian customers will be able to buy  it soon.

Source: Samsung India Store