• Release Announcement - http://www.yuiblog.com/blog/2013/08/29/yui-3-12-0-released/
• Change History Rollup - https://github.com/yui/yui3/wiki/YUI-3.12.0-Change-History-Rollup
• Seed - http://yui.yahooapis.com/3.12.0/build/yui/yui-min.js
• npm - npm install yui@3.12.0
• GitHub - git checkout v3.12.0

Release Build (download this for local deployments)