Way back on October 8th, 2010, my colleague Wiley picked up on sources reporting from Europe that Spotify - the hugely popular online music service - was inching ever closer to finally launching in the US, a development that would put the streaming service in head-to-head competition with Apple's iTunes.

Nine months later, this "imminent" arrival has finally taken place - or at least, it's forthcoming arrival has now been confirmed at long last. On Wednesday, Spotify formally announced its pending arrival in the United States. As part of the announcement, Spotify began asking interested potential users to sign up for notifications so that they may become the first US residents to try out the once European-exclusive service.

"The award-winning music service that’s taken Europe by storm will soon be landing on US shores," Spotify announced on its website today. "Millions of tracks ready to play instantly, on your computer and your phone."

What isn’t known at this time, however, is how Spotify may charge users for expanded use of the service in the states. Currently in Europe, users can get the service for free (that is, if they're willing to endure accompanying ads and a strict limit of ten hours per month). If and how this structure will change in the US remains a big, burning question - but one that will all but certainly be answered soon.

Of course, since Spotify is using the word “free” to advertise the music service’s launch, we can safely deduce that there will be at least one “free” option that comes with Spotify's long-awaited North American debut.

To sign up for an email notification of Spotify’s US arrival, click here.