Google Chrome in the stable and beta channel has been updated to version 6 today. It is already available for Linux, Windows and Mac. If you are using either the stable or beta channel, a simple update should get you Google Chrome 6.
Improvements in Google Chrome 6 includes:
- Updated UI
- Form Autofill
- Syncing of extensions and Autofill data
- Increased speed and stability
In addition to these improvements, there are a lot of security fix as well.
[via Google Chrome Releases]