Have hearts replaced star ratings in iOS 8.4 with Apple Music/iTunes Match?
Solution 1:
No - the controls are moved, though.
Click the song title in the now playing screen, it will change to a set of stars where you can see and change star ratings.
Solution 2:
I just went into Preferences > General Ratings in iTunes 12.2, OS Yosemite and it gives you the option of the old Stars, Hearts, or both. I just went back to Stars...one click for all my library songs.
