Spotify will soon launch a "don't play this artist" feature in its iOS app, which will allow subscribers to block an entire artist from playing across the app (via The Verge). This means that you won't hear their songs in your library, Spotify playlists, chart lists, and radio stations.
The feature is in testing right now, and it currently works on the artist's own songs but does not extend to collaborations. The feature is found in the ellipsis menu on an artist's page, and will sit alongside options like Follow, Share, and Go to radio.
A specific release date for the launch of the block feature has not yet been announced, but during its test of the update Spotify told The Verge it would be coming "soon." Artist and song blocking is a feature that many users have been asking for in both Spotify and Apple Music, and so far Apple has not yet announced a similar update for its streaming music service.