Spotify has a full-featured version of their Windows 10 desktop in the store, and if you are using that version you may not have noticed it has just been updated.
The new version of the app is build 1.73.345.0 and it features one small change.
If you now right click or press and hold on a song title, you now have the option to Show Credits, which brings you to the screen above, which now include Writer and Producer info.
The update presumably also includes the usual bug fixes and performance improvements.
The updated app can be found in the Store here.