George R.R. Martin Is Developing 3 New Series Concepts

June 12, 2015 8:57 AM EDT

Good news for Game of Thrones fans: author George R.R. Martin, on whose books the series is based, is working to develop three new TV shows for HBO and Cinemax.

The Song of Ice and Fire author confirmed these new projects in a blog post detailing how busy he is (and how little time he has for fan complaints about the show). It had previously been reported that he is working to produce an HBO series called Captain Cosmos, about a TV sci-fi writer set in 1949, with a pilot written by Michael Cassutt. While Martin did not comment on details about Captain Cosmos or the other two shows, he did say he is hard at work writing the sixth novel in the Song of Ice and Fire series, The Winds of Winter, which fans are very eager for him to finish.

The Game of Thrones season five finale airs Sunday on HBO.

See Photos from Game of Thrones Season 5

Maisie Williams as Arya Stark. Macall B. Polay—HBO

Michael McElhatton as Roose Bolton, Iwan Rheon as Ramsay Bolton and Elizabeth Webster as Walda Frey.Helen Sloan—HBO

Conleth Hill as Varys and Peter Dinklage as Tyrion Lannister. Helen Sloan—HBO

Emilia Clarke as Daenerys Targaryen.Helen Sloan—HBO

Jacob Anderson stars as Grey Worm in Game of Thrones — Nathalie Emmanuel as Missandei and Jacob Anderson as Grey Worm.Helen Sloan—HBO

Indira Varma as Ellaria Sand and Deobia Opaeri as Areo Hotah. Macall B. Polay—HBO

Sophie Turner as Sansa Stark and Aidan Gillen as Littlefinger. Helen Sloan—HBO

Kit Harington as Jon Snow, Stephen Dillane as Stannis Baratheon and Liam Cunningham as Davos Seaworth.Helen Sloan—HBO

Natalie Dormer as Margaery Tyrell and Lena Headey as Cersei Lannister. Helen Sloan—HBO

Alexander Siddig as Doran Martell. Macall B. Polay—HBO

Carice van Houten as MelisandreHelen Sloan—HBO

Kit Harington as Jon Snow. Helen Sloan—HBO

Daniel Portman as Podrick Payne and Gwendoline Christie as Brienne of Tarth.Helen Sloan—HBO

Dean-Charles Chapman as Tommen Baratheon and Lena Headey as Cersei Lannister.Macall B. Polay—HBO

Kristofer Hivju as Tormund Giantsbane. Helen Sloan—HBO

Lena Headey as Cersei Lannister and Nikolaj Coster-Waldau as Jaime Lannister. Helen Sloan—HBO

Jonathan Pryce as the High Sparrow.Macall B. Polay—HBO

Lena Headey as Cersei Lannister and Ian Beattie as Meryn Trant.Macall B. Polay—HBO

Nikolaj Coster-Waldau as Jaime Lannister and Lena Headey as Cersei Lannister.Helen Sloan—HBO

Kit Harington as Jon Snow and Ciaran Hinds as Mance Rayder.Helen Sloan—HBO

Rosabell Laurenti Sellers as Tyene Sand.Macall B. Polay—HBO

Jessica Henwick as Nymeria Sand.Helen Sloan—HBO

Keisha Castle-Hughes. as Obara Sand.Helen Sloan—HBO

Nell Tiger Free as Myrcella Baratheon and Toby Sebastian as Trystane MartellMacall B. Polay—HBO

Nell Tiger Free as Myrcella Baratheon.Macall B. Polay—HBO

See Photos from Game of Thrones Season 5

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