From the synopsis for next week, the first act of the episode will be Jon-Mance and Stannis' arrival. I now expect Jon's arc won't get very far.

Then there's Dany facing harsh realities, aka the kid and tlhe chaining of the dragons, no doubt. Probably short stuff.

There's Bran "learning more about his destiny". Again, likely short.

And finally Tyrion/KL

Arya isn't in the synopsis, nor Brienne, nor Sansa. Doesn't mean they won't be in, though, but I'm now doubting it for Sansa.

The episode is 15 min longer for the finale.