Samsung has no plans to launch the Quad HD Galaxy S5 LTE-A in the US (or in any other market except Korea)
According to Android Central, a Samsung spokesperson declared that “at the moment, there is no specific plan to provide” the Galaxy S5 LTE-A “to the global market.”
Just like the regular Galaxy S5, the S5 LTE-A is dust- and water-resistant, and sports a 5.1-inch display. However, the Quad HD (1,440 x 2,560 pixels) resolution makes the display the sharpest ever, offering an insane 576 ppi density - higher than the 538 ppi density measured on the 5.5-inch screen of LG’s G3.
The Galaxy S5 LTE-A also has a more powerful processor compared to the original S5: a quad-core Qualcomm Snapdragon 805 clocked at 2.5GHz.
Later this year, Samsung may introduce yet another Quad HD handset - which might end up being called Galaxy S5 Prime, or Galaxy F, or Galaxy Alpha. This one should be available internationally, though nothing’s confirmed at this point.
source: Android Central