Expect it soon.
Hope the map covers most of India, metros and others alike.
Interesting questions on the FAQ page:
"While providing Navigation, are the "One-Ways" taken into consideration?
- In majority of the cases, the permanent one-ways are taken into consideration while giving navigation instructions.
- However, timed one-ways, i.e., those that are one direction for a certain time of the day and change at other times, are not taken into consideration.
In case the phone is giving Navigation instructions and I "still" take a wrong turn, what happens?
- There is nothing to worry even if you take wrong turns. The re-routing feature in the Navigation takes into account your new location and starts re-routing and navigating you to your destination again. This ensures you don't get lost."
FAQ page here, for further reading.