Quartz reports Spotify has held informal talks with banks about an IPO, and could start holding formal meetings next month "in anticipation of an offering in autumn."
Bloomberg reported three weeks ago Spotify is working with Goldman on landing a credit facility, the type of move that's often a precursor to an IPO. Last year, the streaming music service raised funding at a reported $4B+ valuation.
More recently, Apple has been reported to be holding "exploratory talks" with music labels about offering a rival service. Much like Pandora in the Web radio space, Spotify has been able to hold a number of rival subscription services at bay.