I am not sure if this is being rolled out to a select few, or more like it was rolled out to everyone and was the cause of all the issues that were reported yesterday.
It seems like Adobe has rolled it back for now in the wake of the problems.
I tested it yesterday when I still had it... I was less than impressed... like most AI, it didn't really understand the data it was looking at, and it wrote some completely incorrect summaries; made visuals/data that didn't fit on the slide, and most random of all, couldn't distinguish breakdowns in a table, so it compared the "rolled up" row to the sub-rows o_0 (in no world is that a valid comparison).
While a nice thought, I don't see myself using this feature much, though I will be trying to monitor it for improvements.