At Internetdagarna I was one of the keynote speakers (together with Vint Cerf and IT Minister Åsa Torstensson). The slot was originally for Geoff Houston, but he was unable to come. What Geoff and I then did was to merge his presentation with some additional ideas of mine, and suggested I should be the speaker. Something the managers of Internetdagarna agreed to.
Geoff has during many years been following the change in routing and addressing (among other things) on the Internet. One of the more interesting reports that he generate automatically every day is the IPv4 report. This is one of the bases for the presentation that you can fetch as a PDF here.
There are of course tons of other work on IPv6 deployment. One good article in ZDNetAsia include some data from my friend Philip Smith.