The update from 15.41 to 16.9 was a massive change. The entire Object Model of Office was changed from Office 2010/2011 to Office 2016 for Windows. Office 2016 for Mac now shares the same object model as Office 2016 for Windows. We now have the ability to make PivotCharts, have the new worksheet formulas, and have new chart types.
The interface is being worked on feverishly by Microsoft. If you want the latest builds, consider joining the Insider Fast program. However, PivotCharts don't display in the build I just got a few minutes ago. They're working on this. Insider fast builds are pre-beta, so expect to find new undocumented features and new bugs that Microsoft hopes you will report.