A new version of GWT Widgets is now up. It seems to have a lot of new features:

• Wrap existing HTML elements as widgets. Support for hyperlinks, images, buttons, and panels.
• Replace existing elements and widgets on the page with other widgets.
  
• PNGImage widget, with support for transparancy in IE5.5 and IE6.
  
• Color and BorderStyle constants for setting styles.
  
• ImageButton widget designed for use in tool bars.
  
• Allows for creation of buttons individually, or with the help of the ImageButtonFactory.