While Ubisoft is yet to announce a release for the update, a recent listing may have leaked a date for when the forthcoming extension may launch.
Assassin's Creed Valhalla Siege Of Paris Release Date Seemingly Leaked
A Twitter account dedicated to delivering Assassin's Creed content has posted a picture of the listing, which showcases the assumed release for Eivor's next journey.
The Windows Store listed the release for a temporary release date of August 5th. This launch would coincide with Ubisoft's previous confirmation of a Summer window for the DLC's issue.
A list of trophies from the forthcoming expansion was also discovered, confirming previous rumours of what the endeavour would entail. More specifically, the descriptions of the trophies match what enemy types and locations Eivor would conquer.
Granted, this could be a placeholder date for The Siege of Paris. So it is probably best to await confirmation from Ubisoft directly for when the update will be rolled out.