The pictures, which were taken on set in Croatia, show a number of cast members shooting new episodes.
Peter Dinklage, who recently won an Emmy for his role as Tyrion Lannister, is featured in one photograph, while elsewhere Rory McCann is seen reprising his role as Sandor Clegane.
In another of the pictures, Sophie Turner and Jack Gleeson film a scene together in their roles as Sansa Stark and Joffrey Baratheon.
A host of stars have signed up to appear in the new season of Game of Thrones, including Fintan McKeown, Ian Whyte, Natalie Dormer, Carice van Houten, Stephen Dillane, Liam Cunningham, Hannah Murray, Robert Pugh, Michael McElhatton and Patrick Malahide.
Game of Thrones is expected to return for its second season in April 2012 on HBO in the US and on Sky Atlantic in the UK.
> Game of Thrones to return in April 2012 as first teaser trailer airs