Ubisoft leaked that their new Assassin's Creed Shadows will be released on November 15, 2024. Before that, they confirmed in a tweet on May 13 that the codename Red will actually be Shadows. The game's official cinematic world premiere trailer is scheduled for May 15, 2024. That's where this leak comes from, as they accidentally added the release date in the video's description.
Assassin's Creed codename Red news update #assassinscreed
Several Twitter accounts have posted screenshots of the previous description, showing that AC Shadows will release on November 15, 2024. You can see this tweet from @Andreaalex2001 here.
There are several reasons why this should be true, one of which is that it comes straight from the publishers of the game itself. If that's not enough, AC games usually release around October and November. The best example of this is Assassin's Creed Mirage, which was released on October 5 last year. Some other such cases include:
While this date may have been officially leaked, they can always change it as they haven't officially confirmed it yet. This had previously happened with AC Mirage, where the game was originally scheduled to release on October 12, 2023, but was postponed a week earlier. So they can always move the date further or release it earlier.