You will no longer see Office for Mac 2011 as an option for download through the Office 365. For those of you who already have Office for Mac 2011 installed, Microsoft will provide customer support and troubleshooting through October 10, 2017.
Yes. The newest version provides a better user experience (including enhanced features), receives the latest security updates and enhancements, and DoIT will provide complete support.
We recommend users install Office 2016 for Mac to have the latest and greatest features and support. To install Office 2016 on your Mac, in the Office 365 go to Settings > Office 365 settings > Software. Note: To install Office 2016 for Mac, you must be running Mac OS X 10.10 or later.