According to KeithJarrett.it, there’s an interview with Keith Jarrett by Stuart Nicholson in the latest (January/February 2010) issue of Jazzit, an Italian jazz magazine. They’re discussing “Paris / London: Testament”, among other things. I don’t know if the original interview (in English) is available anywhere at the moment.
Update (January 17, 2010). Thanks to Uwe for letting me know that the original interview (in English) has been published in issue #135 (October 2009) of Jazzwise, which can be ordered from jazzwise.com.