Google has announced through its Google Apps blog that it will be dropping support for Microsoft's Internet Explorer 9 browser in the coming weeks.
The blog post highlights Google's policy for browser support which includes the latest and one generation older version of all prominent browsers such as Firefox, Internet Explorer and Safari. Latest version of Chrome is supported as it is automatically updated regularly.
Users of Google Apps such as Gmail, Docs and so on from unsupported browsers will be notified through interstitial pages or in-app notifications to update their browser to a supported version. Google will stop testing and engineering of products on Internet Explorer 9 and will focus on Internet Explorer 11 which was released on October 17th with Windows 8.1. Windows 7 SP1 users can use IE10 or upgrade to IE11 release preview for working with Google Apps.
Most businesses are transitioning from Windows XP to Windows 7 as the former operating system reaches end of support early next year, which has allowed Google to apply their policies to Internet Explorer. Earlier versions of the browser, especially IE6, were supported for a longer period due to the dominance of the browser. Google discontinued the support for Internet Explorer 8 around the same time in 2012.
Source: Google Apps Blog