From the comment list: https://lists.oasis-open.org/archives/camp-comment/201309/msg00078.html
TAB issue: https://tools.oasis-open.org/issues/browse/TAB-101

I was tracking down some background material on YAML when I encountered:

YAML Ain't Markup Language (YAML™) Version 1.2
3rd Edition, Patched at 2009-10-01

at: http://www.yaml.org/spec/1.2/spec.html

I didn't see a change log so I don't know if this would impact CAMP 1.1 or not.

In case anyone else is interested, the yaml-core list is: http://lists.sourceforge.net/lists/listinfo/yaml-core

After a lot of stumbling around I found:

YAML™ Specification Index
Last Updated On 2009-09-29

http://yaml.org/spec/

So, the 3rd Edition of YAML 1.2 appears to be the most recent version.