Vivo V5s comes with latest Android 6.0 Marshmallow OS which has got Vivo's patented FunTouch 3.0 skin layer. Since the device is newly launched, we do not expect that company will release the new software update immediately.
Vivo V5s has Sony IMX376 Exmor RS sensor for the front selfie camera while rear camera is of CMOS BSI sensor.
Yes, Vivo V5s does have softlight feature.
Yes, Vivo V5s 64GB comes with front camera LED flash.
Vivo V5s has 3000 mAh battery which is non-removable. It offers talktime of upto 12 hours on 3G networks and standby time of about 270 hours.