As reported by engadget,
You’ll be able to stream music from your local library and services including Spotify, Apple Music, Amazon Music HD and Tidal. With the Quick Select feature on the remote or Heos app, you can create presets for Internet radio stations or your preferred listening source and modes.
You’ll be able to pick up the Denon Home Sound Bar 550 in mid-February for $599 / £599 / €649. Pre-orders will open on February 1st at Denon’s website and retail partners.