While I agree with WTH on branding and everything, I never understood the "Office App". Excel, Powerpoint, Word .... all fine. OneDrive/Sharepoint ... absolutely. But the Office App was for me always just the app for the total noobs who do not remember how Word was called. Why would I click office app, then open a word template there. It always found pointless.

Under that spirit ... this may even make sense to rename it to Copilot app whatever.