When the Galaxy S4 launched, the best silicon from Qualcomm was the Snapdragon 600. Because of this, in some markets, notably outside the U.S. and its mostly LTE-centric carriers, Samsung went with its own Exynos 5 Octa processor.
However, the 800 is now being produced in quantity, and is set to launch in some upcoming flagship devices. Samsung, in fact, has launched the Galaxy S4 LTE-A in its home market of South Korea. That device features LTE-Advanced support (more or less) and the Snapdragon 800 processor.
Other devices that are set to sport the newest big bully on the block are the LG Optimus G2, HTC's One Max, and Samsung's own Galaxy Note III.
The benchmark image, obtained from Antutu, shows a GT-I9506 device with a Qualcomm Snapdragon 800 2.3Ghz quad-core processor. Considering the device ID is just a tick above the current international version of the Galaxy S4, it's quite possible that Samsung will re-release that device with the processor upgrade.
While that will undoubtedly raise the hackles of those who have already purchased the GS4, it would be the only way for the device to compete on a performance basis with upcoming devices.
It remains to be seen if the device could make it into the U.S. though. Given the length and standards of carrier testing in America, it's quite possible U.S. denizens will never see a GS4 with an upgraded processor.
On the other hand, Samsung has an IFA2013 press event scheduled for Sept. 3, where it is believed the company will unveil the Galaxy Note III. Could a Galaxy S4S (yes, Apple, we're looking at you) be unveiled as well?