I just downloaded and am now using Google Chrome: Developer Preview for Apple OS X. These builds are also available for Linux, but I have not yet tried them. If you’d like to test them out, you can get the builds here: OS X, Linux 32bit, Linux 64bit. More information available here.
So far I have found only one bug, but I’m sure there are others lurking somewhere. Despite the early release and the issues I think this is a great development! Google Chrome is not limited to just Windows anymore! I really think Google is changing the way browsers are not only designed but also leveraged for rich internet applications.