According to the New York Times, someone who has tested out the Galaxy SIV, is claiming the device will include a new feature called "Eye Scroll." With the new Eye Scroll feature you will no longer have to use your fingers to scroll. For example, If you’re reading an article on Heavy.com, and your eyes go to the bottom of the page, it will automatically show more content for you to read.
Thanks to SamMobile details and specs of the Galaxy SIV have been leaked. The Galaxy SIV will feature a 4.99-inch Super AMOLED HD display with a resolution of 1920x1080, Exynos Octa 5410 clocked in at 1.8GHz, and will have a ARM PowerVR SGX 544MP GPU, 2MP (front facing camera), 13MP (rear camera), Blutetooth 4.0, and will run on Android 4.2 Jelly Bean.
We will find out soon if these rumors are true as the Galaxy SIV will be announced on March 14th, 2013.