To answer your question, yes, I will be posting every new update on the new Sigur Rós film and live CD, Inni, at least as long as Pitchfork keeps feeding them to me. I don't see how I cannot. As far as I'm concerned, Sigur Rós is the most perfect band that has ever existed, and likely will ever exist. And as the tour captured by this film was the best live show I can ever expect to see, it's release on November 7th will be a rather monumental occasion.
P.S. And yes, this song was used in that last scene in 127 Hours.