Kane has reportedly been telling people around his home area that he has been thinking about retiring from WWE for quite some time now, but he makes good money from it and it would be hard to walk away from it as long as he is still healthy and able to perform.
It's also been well-documented that Kane is a political fanatic and there has been talk for a long time that he might be interested in running for office in his hometown or maybe for the state.
Regarding his future in WWE, there's no word yet on exactly how long he plans to stay with the company, but as previously mentioned, he doesn't really want to walk away from the good money he makes from it.
