On Chrome's second birth anniversary, Google released the first stable build for Chrome 6 (6.0.472.53), with a simplified user interface: there's a single menu, the "go" button has been removed, cleaned up the treatment of the URL & Omnibox – browser no longer shows "http://" in address bar, bookmark button has been moved to right, and a new color scheme that;s easier on the eyes.
Chrome 6 adds support for form autofill, you can now synchronize autofill data, extensions and all their settings. Extension sync is probably coolest in Chrome 6. Another new feature is support for WebM videos. There's also a feature that's disabled by default: built-in PDF viewer. You can enable it by typing chrome://plugins/ in address bar and clicking "Enable" next to "Chrome PDF Viewer".
Some other changes includes: » new shortcut for toggling bookmarks bar (Ctrl+Shift+B) » if you mouse over a link that has a long URL, Chrome will show entire address in status bar after about 3 seconds » Chrome's extension manager (chrome://extensions/) links to extension gallery pages.
Google Chrome automatically updates to new version. You can also manually download here.