Die Episoden von Staffel 3 sollen im Durchschnitt ein Stückchen länger sein als in den letzten beiden Staffeln:

“There’s almost another full episode’s worth of extra minutes spread across the season,” Weiss says. “One of the great liberties with HBO is we’re not forced to come in at a specific time. We can’t be under 50 minutes or over 60, but that gives us a lot of flexibility.”

“A super-sized season, as befitting Storm of Swords,” Benioff adds. “Last year we had a lot of 52-minute episodes. This year is a lot of 56, 57.”
In fact, the third season finale is expected to run more than an hour — a move that requires special permission from the network (previously, the show’s pilot and its second season finale exceeded an hour). Episodes are still being calibrated so exact times could change, but HBO and producers are confident the season will deliver more Thrones than ever before. Says HBO in a statement: “All 10 episodes gained a minute or two from past seasons with the finale very possibly exceeding 60 minutes.”
Quelle: 'Game of Thrones' gets super-sized season 3 | Inside TV | EW.com

Länger ist gut.