Dear Mark-Kashman
Thanks for your post. PowerApps integration with libraries (FeatureID 57303) had been a long awaited feature. And yes, it was finally put in life.
BUT: it still can't edit file names!!!
So it is impossible to create a new document set with NewForm for instance. And you can't change file name in EditForm.
This makes the feature actually completely useless. I couldn't believe.
By the way: the Power Platform doesn't cope with file names at all. Neither PowerApps, nor PowerAutomate (Flow).
Good to know: the modern MS document management system tools still can't work with file names HUH 
Should we expect another new feature like "PowerApps can also edit the file name"?
Or does MS consider it a bug in the feature 57303?
(Last chance is I did something wrong. But in case of PowerAutomate this "backlog" is confirmed by official MS support and still no hope.)