Spotify signs UMG, only Warner stands in the way of US invasion?

Six months ago, Spotify CEO Daniel Ek couldn't tell us when his subscription streaming music service might launch in the United States, and that won't change today, but apparently there's not much left keeping $10 unlimited monthly music away. All Things D reports that Spotify has signed Universal Music Group to a US distribution deal, the third of the four largest labels to agree, and anonymous sources say the last remaining holdout, Warner Music, may also soon cave. Mind you, one of Spotify's most intriguing new features just got shown up by iTunes in the Cloud, but when it comes to extra competition and consumer choice, we won't look a gift horse in the mouth.