Yes, Micromax Canvas Infinity has the LED notification light.
Micromax Canvas Infinity comes with 2900 mAh Li-Ion removable battery. It offers almost 20 hours of talk time and about 420 hours of standby time.
Yes, Micromax Canvas Infinity does have the support for OTG. You can attach pen drives easily.
No. Micromax Canvas Infinity does not have the fast charging or dash charging. You need to buy Sony CP-AD2 fast charger if you want fast charging.
Yes, Micromas has just confirmed that they will release the software update for the same in short time.