Ubisoft's latest Assassin's Creed series game, Valhalla, was a part of Microsoft's Inside Xbox episode, and while everyone expected a gameplay demo, Ubisoft's Creative Director, Ashraf Ismail, tweeted earlier that it is just "a taste", and all we got was a teaser trailer, mostly composed of cinematic footage of the game.
In any case, the teaser trailer includes a lot of Saxon England, Viking scenes with longboats, siege battle, and weapons that should be available in the game, including dual-wielding ones, throwing axes, as well as the hidden blade.
During the Inside Xbox episode, Ubisoft also confirmed that Assassin's Creed: Valhalla will support Xbox Smart Delivery, which means that those that buy Xbox One version of the game will be able to get it for free on the Xbox Series X when it comes out.
As noted, Ubisoft's Creative Director, Ashraf Ismail gave a bit more details during the Inside Xbox interview.