From evthreads:

“Evanescence is alive and well. John and Rocky were in Evanescence for four years and we shared some great times together playing live, but they were ready to move on and so we have parted ways. Evanescence is something I have loved and nurtured since I was fourteen, and I will continue to protect and fight for it as I always have. Terry, Tim and I are very excited to play live with some amazing new musicians and we will rock harder than ever. Stay tuned for more news on that front. And don’t worry about the tour, guys. Nothing will be cancelled and we will see you soon!”