Google Chrome 6 has been released as a Stable release by Google and i have successfully upgrade to Chrome 6 using the SlackBuild script provided on SlackBuilds project made by Erik Hanson. Even though the version mentioned is still 5, but actually it does work on Chrome 6 as well.
Everything works as intended. All of the plugins are still reserved and the functionality has been improved in overall. I think it's a worthed upgrade.
The full announcement of Google Chrome 6 can be read on Google's Blog