Microsoft has brought Feature Experience Packs to Windows 10. If you have already downloaded and installed Windows 10 2004, then you may have noticed the change tucked deep within Windows Settings. Microsoft is keeping quiet about what the Feature Experience Pack is though and why it sought to include this in Windows 10 2004.
https://www.notebookcheck.net/Windows-10-Feature-Experience-Pack-What-is-Microsoft-doing.470253.0.html
Good, I've always wanted to experience the life of a guinea pig.
@LHPSU
You know that you can choose NOT to update, right? The insider programs is for "guinea pigs".