Motorola India started Tweeting out teasers for a new phone over the weekend. The series of tweets used "real world" examples to highlight the improved Camera, Battery, Security & Performance of this unnamed device. It is likely they are referring to the Moto G 4th gen, although they didn't specify the device yet.
The device will be revealed at Motorola's event which is planned for May 17 in New Delhi. We will keep you posted as more info arrives. Here's our dedicated section for the Moto G (all generations): Motorola Moto G
Source: Twitter - Motorola India