Every month PowerBI releases new features. Some of the features are in preview mode and unless you turn it on you don’t get to use the preview features. This post explains how to turn them on.
Firstly you need to have the latest version of PowerBI to get the latest features. You can download it here.
Click through to see the remaining steps. There are some interesting preview features that I’d expect to make it to the general product in the next few months.