I haven’t really used Itunes in the past 5-7 years so I’m not so worried about this.  Apple is replacing iTunes with new individual apps.  iTunes Music Store will operate in the sidebar in the music app and will continue to exist on Windows.

They are breaking up into podcasts, TV Shows and movies.  These 3 apps will launch in the next version of Mac OS, named ‘Catalina’, coming later this fall.

Since this is pretty big, I’ll leave the link to the full story on Billboard.com

https://www.billboard.com/biz/articles/8514199/apple-announces-new-apple-music-app-replacing-itunes-at-wwdc-2019