It's a duet. I think they said it's going to be released on both their albums.
And why the hell isn't this on iTunes yet? I need HQ version
Oh, interesting. Hence the "Owl City & Carly Rae Jepsen" tag as the artist. Well it's already on iTunes in my country. I don't know why it hasn't been released in the US yet. Strange.
It was on US iTunes on time guys, you just had to go to either Carly or Owl City's page and sort by release date. I got it literally 2 minutes after the official release time (10:00 pm Central).