It's supposed to show suggested apps in the overview and the top of the "all apps" page.
This is apparently AI based and learn from your usage to suggest the apps you are likely to need next.
In fact it has shown the exact same set of 5 apps it has shown throughout the last beta and since I installed the final "stable" release.
Only one of those suggestions is an app I use regularly.
If I swipe up whilst using an app it shows a different set of suggestions but again, the same set it has always shown.
The stupid thing is, one of these in-app suggestions is Facebook (something I hardly use) and still shows if I'm using Facebook at the time!