Okay, so I felt pretty solid in my opinion that by showing Daenerys during the season finale vision of House of the Dragon, the showrunners were basically confirming that she was The Prince That Was Promised.
But it seems that might be the case after all, as showrunner and House of the Dragon producer Ryan Condal clarified that just because Daenerys appeared in Daemon’s vision doesn’t mean she’s The Prince That Was Promised.
During an interview with The Hollywood Reporter, Ryan explained: “Remember that Game of Thrones, A Song of Ice and Fire, House of the Dragon in many ways, are warnings about the perils of power and people in power and absolute power, the reason there was no Jon Snow was the connectivity for us is specifically in and around the dragons. The connectedness between this family and the family to come.
“We know who Daenerys is watching that image, but Daemon has no idea — that could be his future daughter with Rhaenyra. So for that reason, I think it was important that it was Daenerys the image. We are not trying to make any kind of specific interpretation of a prophecy that has yet to be revealed by its author. That is George’s space to tell that story.”
The prophecy is translated from Valyrian where the word prince has no gender attached, meaning the promised hero could either be a man or a woman. During Game of Thrones, it was fiercely debated whether Daenerys or Jon Snow was the Prince That Was Promised.
The prophecy is an equally important plotline in House of the Dragon as Viserys tells Rhaenyra of Aegon the Conquerer dreaming about the Long Night. Aegon believed the only way to defeat the Night King was to have a Targaryen and their dragons leading the whole of Westeros into battle.