Lets just say that there were unresolvable differences and let it go at that. While Harry may not be in Kane any longer you may see him show up as a guest with Jack's band Smart Alec from time to time.
As for the reunion, we thought we had something lined up but the parties responsible for making it happen have been dragging their collective feet. We will be doing something this year and should have a definitive answer sometime in the next 2-4 weeks.