http://googlechromereleases.blogspot.tw/2014/11/stable-channel-update_18.html
TUESDAY, NOVEMBER 18, 2014
Stable Channel Update
The Chrome team is delighted to announce the promotion of Chrome 39 to the
stable channel for Windows, Mac and Linux. Chrome 39.0.2171.65 contains a
number of fixes and improvements, including:
‧ 64-bit support for Mac
‧ A number of new apps/extension APIs
‧ Lots of under the hood changes for stability and performance
A partial list of changes is available in the log.