Japan: Navigational service will be available in this month?

I recently discussed (rather guessed!) how navigational service on mobile can make good business in India. Japan is going to be the first country in this regard. According to this news:

KDDI has just revealed plans to launch a navigational service through its cellular phones. To locate a particular place or establishment, all you have to do is key in its telephone number or postal address. For public buildings, you just have to provide its name. Public transport schedules are also available.

When mobile service providers will bring this technology to India?