The folks at SamMobile have confirmed that according to their sources, the Galaxy S4 will launch with a dual SIM version which will be called the Galaxy S4 DUOS.
This dual SIM version of the phone will be available only in China for Chinese carrier, China Unicom. Aside from the added dual SIM feature, the rest of the specs for the device should remain the same. According to rumors, those specs are a quad-core chipset, 2GB of RAM, a 4.99” Full HD AMOLED display, a 13MP camera and Android 4.2 Jelly Bean.
On March 14th we will know all there is to know.