There is new beginning in the history of internet with the introduction of IPv6. The IPv6 world launch day was celebrated on June 6, 2012, the world over. It was celebrated by top ISPs, websites and hardware manufacturers.
Internet is growing fast. According to Official Google Blog, there are around 2.5 billion people around the world that uses internet on nearly 11 billion internet devices. So, the world was running out of IP addresses, as the current space for addresses were limited to 2^32 (equals around 4.3 billion).
With the shift of protocol to IPv6, a total of 2^128 (equals about 340 trillion) different IP addresses can be accommodated. These many addresses can last for few generations to come. Till 2011, the Internet Assigned Numbers Authority (IANA), the governing body in allocating IP addresses, had to face tough time while allocating IP addresses to the devices. There were situations where many device had to share the same IP address, which is very unsafe for internet related works. As of now, with the introduction of IPv6, the space for trillions of IP addresses has been made which could easily last for a century.
There are many companies and services that have already implemented IPv6 protocol. Even the services of Google would be available on IPv6 protocol from now on.
If you want to join the movement regarding the launch of IPv6, you can do so by following the link – http://www.worldipv6launch.org/
The internet is becoming a better place day by day and with the launch of IPv6, it has certainly become much better than the world without this protocol.