Seven hells, this is welcome news!
Fans demanded more Game of Thrones, and a Lannister always pays his debts, so Season 3 has been made "super-sized." Entertainment Weekly reports that episodes will extend from around 52 minutes to 56 or 57, with the Season 3 finale running even longer. HBO tells the site, in a statement, “All 10 episodes gained a minute or two from past seasons with the finale very possibly exceeding 60 minutes.”
Yes, there are still technically only 10 episodes to the season, but the extra time makes it seem like 11. As showrunner Dan Weiss put it, "So for people clamoring for another episode, it’s in there. It’s just been cut into tiny pieces.”
Season 3 covers roughly the first half of George R.R. Martin's third book, A Storm of Swords. It premieres on March 31, 2013, on HBO. You excited?
Source: Entertainment Weekly