Not for anyone but the early-early adopters, Chrome Canary has finally been released to the Mac crowd.
TechCrunch describes Canary as the "pre-Dev build of Chrome meant for users who enjoy testing new things early and often and don't mind some bugs and hiccups along the way."
From the Chromium blog: "The Mac version of Google Chrome Canary ... automatically updates more frequently than the Dev channel, and does not undergo any manual testing before each release."
Don't expect Canary to be a standalone browser, it's meant to be used in conjunction with the stable version of Chrome you can normally download.
If you're brave enough to try an unstable browser but with the benefit of contributing towards making it a more user-friendly experience in the future, download here.