Note that this is not an official stable version. Update 7 2016.07.03 Insider Fast Channel Update – Office for Mac 15.25.0 (64bit) Microsoft released a new 64bit version of Office for Mac to Office Insiders. Update 9 2018.09.26 Support Office 2019 for Mac now.
However, you can download my VL patch to avoid the requirement of Office 365 subscription. You are still required to have a Office 365 subscription in order to enable full features. Microsoft released a new version (16.17.x) of Office 2019 for Mac.