It has been amazing that Google have been able to pump out 4 releases of a browser that has only been in the market for a little over a year. Compare that to Firefox, which took over six years to reach 3.6.
We’ve improved performance scores on Google Chrome by 30% since our current stable release, as measured by Mozilla’s Dromeao DOM Core Tests, and by 400% since our first stable release.” – Idan Avraham and Anton Muhin
Expectedly, Google Chome 4 is currently only available for the Windows platform. Reports have come in that it works just fine with the latest release of Windows, despite the fact that it only specifies XP/Vista as being currently supported.