Hmmm.....
You don't suppose Janice was delayed so that there's less of a gap between her and other.....?
Nah. That's silly. Neither of them have been announced yet.
(yeah, I know, wishful thinking)
Seriously, could the fact that Nurse Janice is coming in Series 6ish have anything to do with this? After all, we're getting Tux Rowlf before Birthday Suit Rowlf.