Plex has overhauled its apps from the ground up to make them easier to navigate. The teams says it will be able to roll out new features faster as well.
There are some punctuation errors in your title. It should read:
Plex is "overhauling" its apps with a redesign and under-the-hood "upgrades"
Those who use Plex to access personal media will find that their libraries are in a dedicated [hidden] tab, while the Watchlist will take up prime real estate in the top navigation section. Plex says it also streamlined the user menu for quick access to things like your profile, friends and watch history.
So they're hiding the entire point of Plex deep in the menu and promoting things that make them money. Enshittification.
Precisely. I don't want or use any of those features. I've disabled all the streaming service and friend stuff, I don't ever use the watchlist, and I use Tautulli for watch history. I don't even really care about watch history either. I mostly set up Tautulli because I like self-hosting stuff.