Missing purchased tab in App Store and Family Sharing in iOS 11
In the Today tab, tap the account icon in the top right, then choose Purchased.
You can search the app you want to download and choose to purchase. After you give your password the new appstore gives the message that someone else in your family already paid for it and you can download it for free.
This is confirmed by myself just now after i read about it on the developers forum at apple beta.