Dragon Age 4 will take place in the kingdom of Tevinter
We already knew that Dragon Age 4 would take place in the previously unseen kingdom of Tevinter.
There doesn't appear to be any indication of a release date anywhere in the book, but we expect it to be a long way off: Electronic Arts said during its October 2019 earnings report that the next game in the series "will likely come after Fiscal [2022]," which means it will happen sometime after April 2022.
Fans of the Dragon Age series were previously convinced that the story of the Inquisitor would continue in Tevinter — this was indicated by the ending of one of the DLC for Dragon Age Inquisition. The Tevinter Empire was often mentioned in the games of the franchise and in other works related to it. Despite this, players have yet to visit it.