Digital Spy have interviewed the creators of the show and have talked about a possible series 6 and a Merlin movie. See some highlights below:
Q: Is there any more info on the Merlin movie?
A: "It's in early stages - we're discussing talent right now, e.g writers, directors."
Q: Will we ever see Merlin's mother again?
A: "There's every chance! Wait and see!"
Q: Will we see Morgause again?
A: "Who knows?? There's no such thing as real death in Merlin."
Q: Will there be a sixth series of Merlin?
A: "We've always planned five series, but it depends on how popular the show is. There's every possibility it could continue..."
Q: Will Uther return?
A: "We loved working with Tony Head, we've got plenty of ideas as to how Uther could return! But when, we're not sure..."
Q: Will we see either Arthur or Gwen confront Morgana this series?
A: "Yes, there's a very exciting confrontation coming up between Gwen and Morgana!"
Q: Do you feel that Merlin has become a stronger show each series?
A: "Yes - fantasy shows often grow with confidence. The closer we get to the legend, the richer and more interesting it gets... The ambition each year is to keep pushing the envelope. We're always working to make the show better!"