Spotify just released an update to its iOS app that makes a few fixes and additions - most notably the inclusion of concert dates on artist pages. Take a look:
Spotify has also introduced a better search function which sports instant results as well as the new ability to search playlists and user profiles - the latter being a much-needed feature for Spotify search.
Also, if you speak Japanese, Russian, or Indonesian - Spotify is going to make more sense to you (they added language support). It now looks more in-tune with all of your other iOS 7-optimized apps as well.
Images via Thinkstock, Spotify for iOS