After the Datsun's 800 cc redi-GO, their has been rumors for the bigger GO, expected to loose its 1.2 L petrol motor and get the all new 1000 cc engine from the upcoming KWID under it's hood. The fact is quite true as Datsun can again share the engine with the KWID and the performance values of both won't even have that huge difference to be noticed in the real world driving conditions.
The same will also help in improving the mileage of the car and bring it back to life with the new changes. The GO would thereby get a lower price tag and sell in more numbers as compared to the current situation.
Know more about Datsun GO here - http://autos.maxabout.com/cars/datsun/go