I’m a little late on this (this has already been discussed on the Keith Jarrett Yahoo! Music Group, as well as on KeithJarrett.it). Anyway, the musicians among you might be interested in “Keith Jarrett’s Transformation of Standard Tunes: Theory, Analysis and Pedagogy”, a book written by Dariusz Terefenko and published on March 11, 2009 by VDM Verlag. It’s apparently very technical, so it’s probably not for everybody.
As many news outlets have already reported, British jazz musician and writer Ian Carr died on February 25, 2009. He was the author of Keith Jarrett: The Man and His Music and also collaborated on the 2004 documentary Keith Jarrett: The Art of Improvisation, produced and directed by Mike Dibb. More information can be found on iancarrsnucleus.net.