Every once in a while, our products go through a change that we just can't wait to get out to you. That's the case with Google Desktop 4.5, which introduces a visual refresh of the Sidebar and some Google Gadgets. The cleaner and now transparent Sidebar integrates more seamlessly into your desktop environment while still providing convenient, at-a-glance access to all sorts of personalized information. This version is also compatible with the latest software such as Microsoft Vista, Office 2007, and Mozilla Firefox 2.0. There are more details on the Google Desktop Blog.