It could be the children of Jon Snow and Daenerys Targaryen. They would inherit a complex legacy and face many challenges in a world still recovering from war.
The children of the main characters could be the new protagonists. For instance, Jon Snow's possible offspring, if he had any, could inherit his noble qualities and face new challenges in a post - Game of Thrones world.
Perhaps it will be a female character who was overlooked in the main series. She could be a skilled fighter or a cunning diplomat. She might be using her skills to rise above the limitations placed on women in the patriarchal society of Westeros. Or it could be an old character from the main series who we thought was dead but actually survived and has a new adventure to embark on.
As of now, there might be new 'Game of Thrones' novels in the works. George R.R. Martin, the mastermind behind the series, has a lot of material to draw from. However, he is also involved in other projects, which has somewhat delayed the release of new novels. Some possible storylines could explore more of the history of Westeros or follow the remaining characters' fates after the events of the main series.
One idea for a new house in a 'Game of Thrones' fanfiction could be House Frostwood. They could be from a far northern region, beyond the Wall. Their sigil could be a white wolf on a blue field, symbolizing their connection to the harsh, cold environment and the wild wolves that roam there. Their motto might be 'In Ice, We Endure'.
Well, I haven't heard anything about a new 'Game of Thrones' novel. Given the complex world that Martin has created, it would be exciting to have a new novel. But Martin is known for taking his time with his writing. He has been focused on finishing 'The Winds of Winter' for quite a while. Maybe after that, we could see a new addition to the series, but for now, it's all speculation.
One possibility could be that in the fanfic, Jon and Rhaenys form an alliance to take on the common enemies in Westeros. They might realize that their combined strengths, Jon's leadership skills and Rhaenys' claim to the throne, could be a powerful force. This could lead to them gathering support from different houses and ultimately changing the power dynamics in the Seven Kingdoms.
Well, it could be a character created by the fanfiction writer, perhaps a powerful mage who emerges from a long - forgotten land and claims god - like powers. This new god might bring a new set of rules and magic to the already complex world of Westeros.
The 'Game of Thrones' series is extremely popular, and fans are eagerly awaiting a new novel. However, George R.R. Martin, the author, has been involved in multiple projects and has not yet set a firm date for the release of a new book in the series. He has been known to take his time with his writing to ensure the quality of the story, and while he has given some hints about the future of the series in various interviews, an exact release date remains a mystery.