Just three months after Samsung Galaxy S III went on sale, the smartphone manufacturer is already planning to launch the next-generation device - Galaxy S IV. A company official reportedly told Korea Times that "the new device is expected to hit shelves globally in March at the latest" following an initial announcement at the Mobile World Congress in February," reports Engadget.

According to the report, "The timetable was released just three days after rival Apple introduced the iPhone 5, which has received a mixed response from industry experts and consumers as it is seemingly lacking in innovative features."

There're rumours that following Apple's lead, Samsung is going to increase the size of the display on the smart phone from the current 4.8 inches to 5 inches.

Samsung recently stated that they expect the Galaxy S III to pass the 30 million mark by the end of this year after completing 20 million units sold in a mere 3 months.