A new release of Yahoo! User Interface and Yahoo! Design Patterns Libraries is already here. In this new beta many new YUI controls for desktop-like user interface elements including menus, modules, panels, dialogs and tooltips, a new hugely-configurable AutoComplete control, a passel of CSS libraries to help with cross-browser normalization, layout and design, in addition to a dozen new patterns in the Design Pattern Library, including transitions and invitations.

YUI have moved its download to sourceforge to allow more frequent updates. Nate Koechley, Yahoo! Presentation Platform Engineering, have posted more details on the Yahoo! User Interface Blog about this new release and the different improvements and new concepts introduced with it :

I’m very happy to announce today a whole bunch of new stuff in both the Yahoo! Design Patterns Library and the Yahoo! User Interface Library. On the design side, there are more than a dozen new patterns (as well as oft-requested examples for some existing patterns like Tabs and AutoComplete). On the development side, we’ve updated all the existing components and broadened the platform’s reach with several important UI controls. With this release, we’re offering CSS packages for the first time. And, as part of the evolution of our open-source processes, we’ve migrated YUI Library distribution to SourceForge.