It appears that Kanaan was slated to die...
Originally Posted by Platschu
"Teyla suffers a terrible loss"
"John comforts a grieving Teyla"
In another post, he summarized the movie thusly:
For what it's worth, it involved a return mission to Pegasus, the tragic end of one relationship, the beginning of another, and a surprising progression in the alliance between one man and one wraith.
We already know that the beginning of another [relationship] refers to Teyla and Sheppard knowing they got together in the future. Listing that right after "the tragic end of one relationship" makes it sound very much like Kanaan was a goner.
At another time, Mallozzi stated that Kanaan made the trip to the Milky Way and confirmed that he would be in the movie...
"If Atlantis has taken up permanent residence in the Milky Way, then it’s unlikely the Daedalus will be making a return trip to Pegasus anytime soon, meaning characters like Teyla, Kanaan (Yep, he made the trip.), Ronon, and Todd will be taking up permanent residence on Earth. Or are they? And if so, what the hell are they doing?
Talk about fish out of water. While it’s unlikely Kanaan will be getting a job at Dairy Queen, it’s certain that the proper authorities will ensure their guests are properly looked after and, whenever possible, permitted to adjust to their new environment. Ronon’s learning curve may prove a little more. uh, curvier than, say, Teyla and Kanaan, but that’s what having a buddy like Sheppard is for"