While reading the one of the "legal thriller" books during vacation, I came across the mention of
IPv6!! It was listed as one of the features of the "smartphone" that the main character was using... ("Ankyo 850 PC Pocket Smartphone" with "IPv4 and IPv6 dual stack support"). And it was published in 2005!
The book is
"The Broker" by John Grisham.
Here is the picture of the pages, with the IPv6 highlighted...
So, I guess this is the proof that IPv6 as a technology is already deployed... oh, wait, did I mention that this is a work of fiction? ;-)
Stay tuned...