Chrome announced back in June that its Canary build of its Chrome browser (meant for early adopters and developers) would finally support 64-bit on Windows. At the time, no indication was given as to when other platforms would support 64-bit.
Today, iClarified noticed that the latest version of Chrome Canary 38 of Mac OS X now supports 64-bit! With 64-bit support, Mac users can experience improved speed and stability. It may take some time for Google to roll this out to the beta channel, and eventually their release channel, but it's great to finally see the popular browser support 64-bit!