Smartphone leader, Samsung is reportedly planning to release the new KitKat update to company's 2012 marquee models - Galaxy S3 and Note 2 by March end.

Technology blog, Android Geeks citing a company insider (software engineer) has claimed that Samsung's 2012 flagship models Galaxy S3 and Galaxy Note 2 would receive the latest Android KitKat OS in late Q1 (March end), soon after company finishes OS update process with Galaxy S4.

The new OS update will bring all the new features of KitKat such as performance enhancement, improved caller id, immersive display feature, wireless printing options, new Quickoffice word app and more. However, there will be no major changes in the custom TouchWiz UI said the tipster.

As of now, Samsung has rolled out the KitKat update only to the current flagship phablet Galaxy Note 3 (both 4G and 3G variants) in select markets and is expected to soon release new firmware to Galaxy S4.

Brief description of key features of Android v4.4 KitKat OS update:

Priority Contacts: The new OS empowers the phone to automatically prioritise contact list for easy access, based on the frequency of the calls made to the number. 

Improved Caller-ID: If a user receives a call from unknown number, the phone will look for matches on the net with local listings via Google Maps.

Emoji Characters:  Initially users had to install third party app to use colorful characters in their SMS. Now, with KitKat update, the keypad comes pre-loaded with native Japanese Emoji emotion icons.

Enhanced Message grouping: Google has brought in some improvements to the new Hangouts app; now, users can find all their text SMSs and MMSs, audio and video call details all at one place. They can also share location and send animated GIFs.

NFC and Wireless Printing: Google's new OS comes with improved Quickoffice app where-in people can create and store word documents online as well as print files wirelessly on NFC-enabled HP printers.

Immersive display: To enhancethe entertainment factor, the new  OS comes with immersive mode, where the status bar and navigation buttons disappear in to the back ground while you play music, games and read e-books. Users can just swipe the edge of the screen to bring backtheutility buttons.

Bluetooth MAP (Message Access Profile):  This feature enables android devices in cars with Bluetooth support to exchange messages.

Multi-tasking:  With efficient memory management, users can multi-task by opening multiple applications; Listen to music while you can browse on the net.  

Performance: The new KitKat OS is expected to bring performance enhancements thereby increase battery life as well.