SamMobile, which has been fairly accurate with its Samsung (SSNLF, SSNGY) scoops, reports the Galaxy S5 will come in both a costlier metal and cheaper plastic versions, and feature a 2K (2560x1440) OLED display in the 5.25" range.
The Galaxy S4, by contrast, features a 5" 1080p display. A Korean site previously reported the S5 would come in metal and plastic versions, while adding the metal version would also have a curved display.
Universal Display's (OLED) shares recently sold off on a report from a Chinese site stating the S5 would use Sharp LCDs instead of OLEDs, but the small size of the drop suggested investors were skeptical from the start.
SamMobile also reports the S5 will have a 16MP camera (the S4 has a 13MP camera), and that it will rely on both Samsung's Exynos 6 CPU and Qualcomm's (QCOM) recently-announced Snapdragon 805 (its new flagship). The S4 uses a combo of Samsung's Exynos 5 and Qualcomm's Snapdragon 600.