Elon Musk has announced that orders for Solar roof tiles are now open. Also confirms that they'll do a corrugated iron version. Looking at some of the replies though, sounds like it's not going to work for India, not designed to fit their roofs:
Solar roof can be ordered for almost any country. Deployment this year in the US and overseas next year.
This signal was also submitted by Gemma Adams:
Tesla is opening up pre-orders for its solar roof tiles today - a little later than previously slated. CEO Elon Musk tweeted that the company will be accepting orders for the tiles from later this afternoon. Although only two of the four possible tile styles are being made available at this point.