The beta version of Google's open source browser is out! It's called Chrome, and appears to be a very minimal design. According to the download page, its compatible with Windows XP and Vista.
Information on the product seems pretty limited, but I was able to find this quote from Google on FoxNews about the product:
"On the surface, we designed a browser window that is streamlined and simple. To most people, it isn't the browser that matters. It's only a tool to run the important stuff — the pages, sites and applications that make up the Web," Google says on its Google Chrome site. "Like the classic Google homepage, Google Chrome is clean and fast. It gets out of your way and gets you where you want to go."
Google Chrome (BETA) for Windows is available for download here.
If your interesting in what features it offers, here is a features list.