The upcoming Samsung Galaxy S4 is expected to resemble the Samsung's latest phablet Galaxy Note 2 rather than its predecessor, Samsung Galaxy S3, according to a mobile analyst.

An expert said that Samsung must use an innovative hardware design, when it launches the Galaxy S4 in order to stay ahead of the race.

Mobile devices expert Charles Golvin told tech news website T3 Samsung must continue to innovate in hardware design "in order to maintain success."

He also predicted that the device could introduce front-facing speakers for the first time as Samsung seeks to improve the overall audio quality on the S4.

"Samsung has been at the forefront in terms of specs, and I expect that will continue. It's not clear whether the S4 will carry Samsung's octo-core processor or a Qualcomm quad core, but I expect a combination of processor, 2 GB RAM minimum, and expanded battery to provide high performance with extended battery life," Golvin said.

"The other areas of hardware development will be in the camera, both still and video, a 1080p HD display as well as audio, perhaps with front facing speakers," he quickly added.

Samsung sent a cryptic message hinting the release of the much awaited Samsung Galaxy S4 on March 14. The invite drops clues that the Galaxy S4 is indeed the smartphone that will be unveiled on the unpacked event.

Samsung Galaxy S4 is the next generation of the popular Galaxy S series. New rumours claimed that the much awaited Samsung Galaxy S4 will be launched on March 14 at Radio City Music Hall in New York City.

The latest news on the rumour mill of the Galaxy S4 is that the handset will include high end features such as 5G WiFi, 5-inch Full HD screen display, 13MP camera and a quad core processor.

The Samsung Galaxy S4 is also rumoured to feature an Exynos 5 Octa (8-Core) CPU, Mali-T678 (8-Core) GPU, 4.99″ SuperAMOLED Full HD Resolution Display, 2GB of RAM, 13 Megapixel Rear facing Camera capable of shooting 1080p Full HD Videos at 30FPS, 2 Megapixel front facing camera capable of shooting 720p HD Videos and run Android 4.2.2 Jelly Bean out of the box.