Facebook made more data available for users in their data access tools. The tools mentioned in the announcement include Download Your Information on FB and Download Your Data on IG.
Users using these tools will have access to the information on data used to improve their experience which includes profile info, likes, follows, etc. Besides that, now you will have more insight into inferences used by the platforms to personalize your experience on the News Feed and Watch section.
The tool for Instagram will show you the interest categories assigned to your accounts used to recommend you content that you may like.
You can find more information on the recent updates as well as insights into how Facebook uses inferences here.