The most important lesson
for Internode is that done right, customers will not even notice the change to IPv6
My router (FritzoBox is set up to run IPv6 when possible). Those devices on the LAN that are IPv6 capable play along happily and the rest (the telly, one mobile phone) carry on blissful of their ignorance. ISP, Unitymedia, doesn't provide an IPv6 uplink yet but has it in the FAQ.
1 % is already pretty good compared to a few years ago. Many of Germany's ISPs have committed to supporting IPv6 this year and I assume it's similar elsewhere. The rest will follow as network buildouts and updates use IPv6 capable hardware. There won't be anything dramatic unless particularly positive (much more efficient routing, lower latency, simpler provisioning) or negative aspects (security, privacy, configuration headaches) associated with deployment come to light, which events like IPv6 are supposed to highlight.
Will El Reg be running an IPv6 service like Heise does?