It's not just next week, it said "in the coming weeks" and there was a LOT of stuff shown...too much to be from just one episode.
I'm interested to see what's up with sunfyre. all this alluding to him being dead, but then they spend so much time with him in the episode. aegon says he's still alive, but you're left to assume it's just his grief talking since they don't give any hint that sunfyre actually is just hibernating or something.