Unlike with Apple, where a large number of iPhone owners gravitate towards the iPad when they decide to purchase a tablet, the same cannot be said of other brands, where customers more likely to mix and match.

"We will see more of a step towards more 'stickiness' towards the brand," Ms Cozza says.

"Already the Galaxy S3 can be seen as an alternative to the iPhone, [but] the integration that Apple offers with iPad is still not matched. Samsung is not there."

The expectation the S4 will feature eye-tracking capability has been heightened by existing technology in the Galaxy S3 - the phone's Smart Stay function stops the screen from dimming when somebody is looking at it.

Furthermore, the New York Times notes that Samsung filed for a couple of trademarks this year named "Eye Scroll" and "Eye Pause".

Analysts also predict the standard array of upgrades - faster processor, better camera - and Ms Cozza predicts we will see something of a small leap in a major area of Samsung's expertise.

"I would think they will leverage some strength in display," she says. "Providing something on the display side that is different."

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