jQuery UI 1.9 首个维护版本发布了，修复了包括 Accordion, Autocomplete, Button, Datepicker, Dialog, Slider, Spinner, Tabs, Tooltip, Draggable, Resizable, Sortable, Widget Factory, Effects and CSS Framework 在内的一些 bug，完整列表请看 changelog.
下载地址：
- Development Bundle: https://github.com/downloads/jquery/jquery-ui/jquery-ui-1.9.1.zip
- Themes Package: https://github.com/downloads/jquery/jquery-ui/jquery-ui-themes-1.9.1.zip