Looks like it’s right at 50% and rapidly increasing.

[https://www.google.com/intl/en/ipv6/statistics.html]

What exactly are you going on about? 5-10 years for the old devices to be EOL’d, and we’ll likely be at 95%.

Devices maybe, software won't :-\ (We're going to see ever-diminishing pockets of IPv4 around for a loooong time, much like we still see pockets of Cobol.)