In the interview with Radio Times today, Colin Morgan sort of strongly gives us a hint that the end of these series will be the complete end of Merlin.

To the question if he would like to see a movie made he answered the following:

“Now that it’s out in the open that this is the final series, I think fans will be satisfied with how it’s ended. To do any more would possibly go down an avenue that would lead to people being unsatisfied. I think it’s important to end on a high.”

Which gives me a strong feeling that the movies and spin offs we read about last week, will most likely not be with our precious Merlin himself.

As much as it saddens me however I understand the decision to move on to something new after 5 years.

Source: http://www.radiotimes.com/news/2012-12-03/merlin-colin-morgan-answers-your-questions-on-doctor-who-plans-for-the-future-and-juggling