Okay, I finally noticed this datum. On
http://blog.jqueryui.com/
the current version of jQueryUI is documented: new features, changes, etc.
Quite a bit down the page, the .0 release of the current version is documented, and includes this section:
**Supported jQuery Versions and Browsers**
jQuery UI 1.11.0 supports jQuery 1.6 and newer. That’s 25 versions!