Now, we have learned more about this device and it is rather similar to Lumia 435 and only difference may be in terms of the rear camera and design. Here are the specs of RM-1099 reported by our sources.
4-inch, 800 X 480 display
1 GB RAM
Snapdragon 200 Dual-core processor
2.2 MP – 3 MP rear camera, 864 x 480 video recording (as compared to 2 MP camera of Lumia 435)
VGA 0.3 MP FFC
8 GB internal storage
We are however not sure why this variant is required, when Lumia 435 is already out. But since it is getting tested in both India and Indonesia, we may have a Lumia 435 variant with may be an “auto-focus camera”. Everything else looks similar in terms of specs to Lumia 435.