If the source of this spicy rumor is to be trusted, the next Galaxy S smartphone would boast an even bigger screen measuring 5 inches in diagonal. In comparison, the Samsung Galaxy S III has a 4.8-inch screen. To no surprise, the processor inside the Galaxy S 4 would be an Exynos one, although nothing is said whether a potential U.S. variant would swap it for a different chip due to LTE compatibility issues. What is said, however, is that the processor will be of the quad-core kind.
Again, keep in mind that what you just read exists only in rumorland and could be totally inaccurate. Let's just wait until more info on the matter is revealed before getting excited about Samsung's next greatest smartphone.