Our aim is to stay true to the known canon for this period of time. For example, since the game opened, King Daeron has died in Dorne and the Dornish Conquest has failed, just as in the know history for the period. It also means that House Targaryen cannot be overthrown by another House.
However, though the truly major events of the period are known, the fate of all non-Feature individuals is entirely open save for actions that would alter known events or spark events that are so major that if they had happened, they would have been mentioned.
If/when more details relating to this period become known, we will incorporate those that we are able to incorporate without altering past roleplay. A list of purposeful and unavoidable differences between book canon and mush canon can be found here.