Hi @Daniel24 ,
Yes, as you said, the Smart narrative feature is not yet supported in the May version of PowerBI RS; even in the latest version of powerbi desktop September, which is more complete in terms of feature coverage, this feature is still in PREVIEW feature status.
If you do need it, go to File>Options and Settings>Options>Preview feature to turn on the feature switch and make sure that the "Smart narrative " visual object is turned on.
More details, you can read belwo blog:
Smart Narrative (preview) | Microsoft Power BI Blog | Microsoft Power BI
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.