Real-life images leaked ( Above ) in China claim that the earlier leaked LTE version of Lumia 730 will be called Lumia 735, while the Dual-Sim version will come as Lumia 730.
So, now we can safely confirm that the LTE variant and Nano-Sim of Lumia 730 which passed certification at FCC as RM-1038 will be called Lumia 735 and the Dual-Sim variant RM-1040 which we caught at FCC will be called Lumia 730. The Dual-Sim RM-1040 variant has passed certification in Indonesia too.
Thanks NokiBar for the tip. Cheers!!