NeoWin has posted information and screenshots from the PDC 05 Windows Vista build
The search functionalities were demo'd briefly although nothing new was shown. The alt tabbing in 3D is back using Windows Key + Space bar a user can tile their applications to make the experience clearer and easier to find windows. The sidebar will ship with Vista which was confirmed during the keynote.Microsoft Demo's Post Beta 1 Vista Build - PDC 05
The sidebar now contains "gadgets" like an RSS web feed gadget, picture slideshow gadget, clock gadget, WMP gadget and so on. The gadget gallery allows users to plug-in their own applications or 3rd party applications. Gadgets can be coded in DHTML/script or Avalon allowing developers to build rich mini applications straight into the sidebar.