Jaime hasn't mentioned the Sept bombing, but there definitely seems to be a change in his tone toward Cersi. The Kingsguard have also started wearing black. Cersi is in black. It's a fortelling. At some point I see Jaime either pulling a murder/suicide with Cersi, or just icing her, and going and knocking the boots with Breann of Tarth. Perhaps he'll have some of kind of interaction with Jon Snow who's seeking a ceasefire to deal with the wights. He'll want to do the level headed thing, and help fight, but of course Cersi won't cooperate in any capacity. In order to save the world Jaime gotta stab his sister with something other than his dingus.
Maybe Cersi is ready to die, and she wants to take all her enemies with her.
I definitely think we'll see Bronn rescuing the last sand snake. And, titties will be seen, and enjoyed by all. Theon will grow some figurative balls, and assist in the rescue of his sister.