Spotify: Recommended songs - new feature!

Have not seen this until today, so I guess it appeared in a very recent update.

All my playlists (on desktop client - PC, does not seem to be on Android yet) now seem to have a listing of 'Recommended songs' based on the songs in that playlist if I scroll to the very bottom of the playlist.

Seems to be a good selection for most of the playlists I have checked so far. What a great new feature!