I guess we’ll have to just wait and see whether a Game of Thrones Season 7 episode leaks before the actual premiere and draw our own conclusions accordingly.
Regardless one actual Game of Thrones actor is certainly speculating and even speaking up about what he believes.
In addition, you can find out what HBO still has coming out in 2016 with our fall TV premiere schedule.
So, the leaks also could have happened exactly the way HBO said they happened, although that does put HBO in a pretty bad light in terms of competence.