I haven't seen anything about Chester, either, so apparently he's not in the picture. That would seem to leave Nic alone in the drumming department. It seems an odd choice, as they've played with a second drummer every tour since 1976 (always Chester, except for the one tour with Bill Bruford), but hey, it's their call obviously.
Daryl is on board, though. Historically, Daryl usually played guitar on the parts originally played by Steve Hackett, and played bass when there were guitar parts originally played by Mike. Presumably it will be similar this time.