Google Chrome 10 was released today (March 8, 2011). You can download Chrome here:
http://www.google.com/chrome
If you already have a previous version of Chrome installed you can update to Chrome 10 by following these steps:
1) Open Google Chrome
2) Click on the "Wrench" Customize button in the top right.
3) Now click the About Google Chrome.
4) If you have a previous version, it should start downloading the Google Chrome 10 update. It should say Installing update in the bottom left of the 'About Google Chrome' pop-up box.
5) Once installed you will need to restart Google Chrome.