Not much has changed. I'm currently working to open source an implementation I worked on that's compliant with the finalized version of the spec. The most up-to

Not much has changed. I'm currently working to open source an implementation I worked on that's compliant with the finalized version of the spec. The most up-to-date implementation I've seen in the open is https://github.com/hiidef/oauth2app https://github.com/hiidef/oauth2app, which implements draft 16.