For those that may have not seen them, here are some recent blog posts that may be of interest.
Describing Ansible’s Architecture
http://blog.ansibleworks.com/2013/11/29/ansibles-architecture-beyond-configuration-management/
Some views on keeping software simple
http://blog.ansibleworks.com/2013/12/07/arriving-at-simplicity/
An overview of how/why this project got started
http://blog.ansibleworks.com/2013/12/08/the-origins-of-ansible/
The LinkedIn group is also a pretty good place for keeping track of articles and posts from around the web: