In late August Google  released Chrome 64-bit for Windows, which brought benefits in speed, security and stability. They’re now bringing these benefits to OS X with Chrome 64-bit for Mac, version 39, due to be released in Nov 2014. Unlike on Windows, where Chrome is available in both 32-bit and 64-bit, on Mac, Chrome will only be available in 64-bit with version 39 and after. As a result, 32-bit NPAPI plugins will not work on Chrome on Mac version 39 onwards.

Release Schedule
  • Windows: Stable version 37 is currently available as an opt-in via the Windows-64-bit link
  • Mac: Stable version 39 will be released to all customers in November 2014 via a Chrome update

 

For more information:
Chromium blog announcement

Chrome release blog announcement