With his new album (Black Swans and Wormhole Wizards) being released on October 5th, Mr. Satriani has released the first song on the album as a free download.
http://www.youtube.com/watch?v=wBkQBIhiELI
honestly, it doesn't really sound like anything new from him, just re-hashed riffs. The sporadic use of synthesizers is something I've never heard in his music though.