I have the same problem with the EA App... Witcher 3 is stuck in "update needed".It works I launched EA app Witcher by "run as Administrator", then CDPR launcher window popped up and from there game is in 4.0.0. version. Did new quest and even created new Wolf school armour already . In EA app however it still showing "update available" and play button is not there, but who cares. Good luck to you guys, I think post to be closed.
I will try running the EA App as Administrator.