Current Bundled JS Library Versions:

jQuery - 1.8.2 | Updated 10/27/12 | http://jquery.com/

Dojo Base - 1.2.3 | Updated 2/5/09 | http://www.dojotoolkit.org/downloads

Prototype - 1.7.1 | Updated 10/27/12 | http://www.prototypejs.org/download

Scriptaculous - 1.8.3 | Updated 10/15/09 | http://www.prototypejs.org/download