Lyle made a high profile appearance at TED in 2011 playing music using algorhythms, using a program he designed. It was a very unique set of music. He has interests in architecture, programming, mathematics and pool. He's also been playing with his quintet over the past year with his neice on vocals. He's supposed to make a new album, which I'm sure will be under the Metheny Group Productions banner and released on Nonesuch most likely if it happens.
Thanks.
For someone so important, he's living in obscurity.