He'll die. There are a few things to back up our assumption that Brienne's trusty squire is going to fall during the Battle of Winterfell. In terms of the show, Pod will never leave Brienne's side, which means he'll be in the thick of the most dangerous action. Outside the show, actor Daniel Portman, who plays Pod, has given an interview to Esquire about his time on Game of Thrones, which almost seems like a farewell gesture. There's also the matter of his recent Instagram post featuring him and costar Gwendoline Christie (aka Brienne), which he captioned:
"My dear, dear friend. A beautiful companion on this journey and the kindest, most committed, hardworking person I've had the pleasure of doing any of the crazy stuff we do with. The show might be over for us, but the love remains, always. My friend."
Bye, Podrick.