Google published the first public beta version of Chrome 6. This new release has a cleaner user interface, a faster JavaScript engine, Autofill, synchronization improvements, and enhanced stability. A future edition will also add an integrated PDF reader, this feature is still lacking in Chrome beta 6.0.472.33.
Here's a snip from the announcement on Google's blog:
You may notice that we’ve given the user interface of the browser a facelift in this beta. As previewed on the developer channel in June, we have streamlined the upper toolbar, made the Omnibox more approachable, and condensed all of our options into a single menu. We hope that these visual changes will make Chrome feel even simpler.
Last, but certainly not least, our new beta release continues to be faster than before. Compared to our previous beta release, our newest beta hits a 15% speed improvement on the V8 benchmark, and a 15% improvement on the SunSpider benchmark, both of which measure JavaScript performance. Additionally, we’ve improved by 64% on Mozilla's Dromeao DOM Core Tests.