Yeah, it's a shame. I'd love to see official versions for both Mac and Linux as soon as possible.
This really reminds me of Skype. The Skype version for Windows is ages ahead of the ones on Mac and Linux. I had to use Skype on a Windows computer, and I was blown away by the interface changes and features. Let's hope that Chrome doesn't become that.
Granted, at least Google is working a Mac version. There are even development builds that can be downloaded. I don't think it's anywhere near beta quality, though. Hopefully this doesn't mean that by version 6 of Chrome for Windows, Mac users will be rewarded with Chrome 1 for Mac