Update! Update! Update!
15 January, 2013: The new Maruti Suzuki WagonR is now launched with even higher claimed mileage! Click here for latest photos of its exterior, interior and get details!
Maruti Suzuki India has premiered the 2013 Wagon R in the Japanese market and may eventually bring this refreshed Wagon R to India as well.

The new Wagon-R is dynamically different yet is identifiable as a part of the Wagon R lineage. It sports large pulled back headlamps, a new rectangular grill with three thick chrome strips and large bumpers with an air dam upfront!
From the rear the new Wagon R is very similar to the older model but looks broader and taller due to the new bumper design. The tail lamps retain the overall shape of the older generation model with only subtle changes.
Check out CarToq Maruti wagonR research hub
Upcoming cars from Maruti Suzuki!

On the inside it gets a new dual tone dashboard along with dash mounted steering wheel and gear knob. This gives the Wagon R a smarter look and creates more interior space as well.
The new Wagon R is 3.39 metres long which makes it shorter than the model presently being sold in India. This however does not mean that the cabin is any less spacious because the wheelbase remains unaltered at 2.4 metres. Also see: How to buy a used WagonR
The Wagon R that premiered in Tokyo sports a 660 cc 3-cylinder, petrol engine that makes 52 bhp (normally aspirated engine) and 64 bhp (turbocharged version). If and when the new Wagon R comes to India it will likely get the K series engine that does duty in the present Wagon R.

The company also showcased the Wagon R Stingray special edition in Tokyo although this model may not be launched in India. Also see: Photos of the future A-Star!