Changing names of cities is a fad among politicians in India. The reason is to junk Anglicised versions and revert to original Indian names.
Thus Bombay became Mumbai, Calcutta is Kolkata, Madras is Chennai etc. The plan to change the name of Bangalore to Bengaluru is stuck in bureaucratic redtape.
This has given rise to tricky problems. While the changed name, it's still Bombay high court. On the other hand, while it's Bengaluru International Airport, the city still keeps the anglicised Bangalore.
In Australian state of Victoria, a small town has changed its name,but with a purpose. The place called Speed will henceforth be called Speedkills on order to raise awareness about road safety. Really interesting and sensible. BBC has a very good story on it.