Looks like Google released a new toolbar today at http://www.google.com/tools/toolbar/T4/.
Chris Sherman has the official Search Engine Watch write up he named Google Releases Upgraded Toolbar. The new features include;
Now you can make your Toolbar as unique as you are. You can add buttons and bookmarks; get instant search suggestions; share web pages with friends; and enjoy the Toolbar's pop-up blocker, web form filler, and spellchecker.
I think most people will benefit from "Search smarter with instant suggestions as you type in the search box."
Matt Cutts, Google Engineer, blogs on it also with his ideas and suggestions. Of course we got the forums talking about it, including, Search Engine Roundtable Forums, WebmasterWorld and DigitalPoint Forums.