"So," asked one of my friends, "what's changed in India since your last visit." The answer is a bit complicated. It depends on which India you are talking about.
This is a village I tend to visit every time I go back to India (it's near where my parents live). What's new in that village in the past two years? A water tank and a children's park (the splash of blue in the photo), both abutting the village's fresh water pond.
I encounted the other India in Delhi, the national capital. Since the last time I was there (two years ago), Delhi now has a new international airport, a bunch of limited access highways and a greatly expanded metro system. This is the southmost leg of the metro, in Gurgaon, Haryana. The station's still under construction, but the trains are running.