Although IPv4 is still in place, the IANA ran out of IPv4 addresses to asign to devices like smartphones, tablets and chumbys back in February 2011. The pressure to find new addresses is very high.
Vint Cerf, considered one of the founding fathers of the internet, now works at Google. Google are one of the big names taking part in IPv6 day and have taken a leading role in explaining to the public what is going on – and why it is important. They’ve created this video. A worthy 138 seconds of your time.
You can read up on IPv6 and efforts to promote awareness at World IPv6 Launch.org.