One 说 that emilia 狐狸 is not returning to merlin as she 说 in an interview that she will be doing another tv season(probertly silent witness).
But this is not true as we have seen pictures of her filming season 4 with katie.
I also founds out that Nimueh, Morderid and alvar will be returing,along with lady vivian and Elaina.
They are also going to introduse 更多 knights of the round 表 yay.