The Google Apps blog announced that Google will end support for Internet Explorer 9, now that Internet Explorer 11 is available.
In the statement Google has reminded users that they support latest version of Google Chrome as well as the current and prior major release of Firefox, Internet Explorer and Safari on a rolling.
So, now the latest IE version is 11, which means that Google will officially support 10 (previous) and 11 (current) versions. This is interesting because a lot of IE users are still using IE9, and even IE8. All those users will be notified when use Google services.