Free ADSL, which has been providing IPv6 access via 6rd for like 10 years, even started deployment of IPv6 only DSLAMs in April.
This makes the absence of IPv6 on major platforms and sites very visible. There is no excuse not to have IPv6 today, especially for market leaders, and its lack thereof is definitely a showstopper WRT services we choose to use.
As an anecdote, we have seen some constantly increasing traffic over IPv6 in our logs, and our customers are definitely not on the technical side, very far from it.
http://m.universfreebox.com/article/38742/Free-deploie-ses-p...
https://aws.amazon.com/blogs/aws/new-ipv6-support-for-ec2-in...
Again, the thing I would like to see is being able to either peer only ipv6 for VPCs, or have a VPC that is ipv6 only. That to me will greatly increase flexibility and simplicity if I'm ok with an ipv6-only deployment
I would be really happy to have only ipv6 addresses in my VPC, as that would make connecting up multiple VPCs much easier since I know their ip space won't overlap.