While the rumored eye tracking feature that uses the front-facing camera to scroll content on the screen will not be on the unit, it seems that there will be a feature that tracks eye movement to stop and start videos. If your eyes dart away from the screen, a video that is playing will stop. Focus back on the screen and the movie will re-start. Unfortunately for Samsung, its country mate, LG, beat it to the punch with an announcement today that the feature will be made available as an update for the LG Optimus G Pro.
Another feature on the Samsung Galaxy S 4 allows your finger to hover over the screen to see previews of your email and other content. This is similar to the Air View that is used with the stylus on the Samsung GALAXY Note II.
With the clock ticking toward today's big introduction of the Samsung Galaxy S 4, keep it right here on Phone Arena for live coverage!
source: it168 (translated), EngadgetChinese (translated) via Engadget