You can sign up here: http://www.mozilla.org/firefox/os/ to know when the Firefox OS will launch in your country.

You can view where devices are available here:http://www.mozilla.org/firefox/os/devices/

firefox os smartphones will come to india in coming months.Spice and intex are launching phones in the month of july and august respectivley.These phones will be available for under Rs.2000.you can get more information here : http://www.fonearena.com/blog/105668/mozilla-partners-with-intex-and-spice-to-launch-affordable-firefox-os-devices-in-india.html

hello, here is today's product announcement by mozilla: https://blog.mozilla.org/blog/2014/08/25/first-firefox-os-smartphones-available-in-india-this-week/