Looks like it just went live this morning. Includes SL support, including a 64bit pref-pane, so no more "YOU MUST RESTART SYSTEM PREFERENCES" messages. I think it is also supposed to have a 64bit kext, and thus no longer requires that you use the 32bit kernel for it to work, but I haven't tested it. Also, when assigning buttons, there is a new "Expose and Dashboard" option, so you don't have to bind it by shortcut key anymore (you still have to for Spaces, it seems). It's free for current owners.