This spoiler is a bit old, but I don't see it reported here, so...
* Daenerys will be visiting the Dragonpit in season 7, which is located in King's Landing. In the past, this was used to house the Targaryens dragons, but it was mostly destroyed.
Some of the speculations that have been made after this spoiler came out is that Cersei may be already dead at this point, or at least defeated, since she isn't going to just let Daenerys walk in. Another speculation was that if Cersei somehow managed to defeat Daenerys, is it possible that Daenerys is being held captive at the Dragonpit? My guess is that at this point, Cersei will be either dead, or at least defeated.
There is also some work being done on the set for the courtyard of Riverrun. The source, IrishThrones, hasn't been great for plot related spoilers, but has apparently been pretty reliable for location based spoilers, so these are supposed to be legit.
Game of Thrones spoiler report: Daenerys in season 7 | Watchers on the Wall | A Game of Thrones Community for Breaking News, Casting, and Commentary