Ahead of its official release later today, the first high-resolution photos of the Samsung Galaxy S4 have leaked from China. The images not only confirm the rumored hardware specs (4.99-inch 1920x1080 display, 8-core Exynos Octa SoC), but they also confirm the Galaxy S4's dimensions (it's super-thin!), the battery size, and introduce some interesting new software features -- such as S Pen... but without the pen.