A new synopsis which can be found in the game files describes the DLC as the following:
"To the South, the kingdom of Francia has unified under a single king for the first time in a hundred years. Charles the Fat, the great grandson of Charlemagne, now wages a slow war against the Norse in Francia.
England could be next. Ravensthorpe must make new allies in Francia to avoid the threat of war. A visitor will arrive at Ravensthorpe's dock to launch the adventure."
Reportedly taking place in 885 a few years after the events of the main game in 877, the DLC seemingly won't focus on the Hidden Ones, which many fans were hoping for.
A line of dialogue from the DLC, which is present in the game files says "Just as they were in England, the Hidden Ones seem absent in Francia. What treasures could they have left behind?"
The DLC currently lists a release date of November 9, 2021, but this is just the date it will be released by, before the one year anniversary of the game.
That is all we have on the DLC right now, but hopefully we will hear more at Ubisoft Forward on Saturday, which will have new reveals for Assassin's Creed Valhalla.
The first DLC for the game released just last month and we enjoyed it, giving it a 3.5 our of 5 in our review.