Back in September Game of Thrones actor Kristian Nairn revealed that his character, Hodor, and Bran Stark won't be appearing in season five. Those who've read the books probably saw it coming, but for everyone else it had to be a surprise. For some it was even pleasant.
GOT showrunner David Benioff has revealed why the move was made to have Hodor and Bran sit out for an entire season, and it all has to do with the pacing of the books (Don't worry, there aren't any spoilers.) Benioff has been trying to keep all the different stories roughly chronologically parallel. If he went ahead with Hodor and Bran's storyline this season, they'd be much further ahead than the rest of the characters. So everyone else who hasn't been killed off will continue their stories before Hodor and Bran can come back in the mix for season six.
"It made sense to stop where we did," Benioff said told EW. "[Bran is] now entering a training period which is going to take quite some time, much of which isn’t particularly cinematic. So rather than being stuck in a cave for a year, we figured it would be interesting to leave him out for a little bit, so when you see him again..."
Benioff stopped himself there to avoid revealing too much.
Get ready for the Hodor and Bran hiatus when season five airs next spring.