Here are a few things that stand out to me:
The Map Covers The Entire Country Of Egypt - Now I’m not sure what scale it’s at but the devs say it covers the whole country. That’s a pretty huge map.
Ptolemaic Era Egypt - I know a few people wanted a “pure” ancient Egyptian setting but I think the Ptolemaic era has the best potential because of the culture clash between the Europeans and North Africans\Middle Easterns.
Revamped Fighting - They seemed to have went with the Bloodborne school of fighting.
Giant Snakes & Bending Arrows - Some people have complained that this isn’t realistic enough for a AC game but I think that’s crazy talk (Precursors and Pieces of Eden anyone?) but honestly the closer this series gets to Prince of Persia the happier I become.
Hella Witcher Feeling - The whole beginning of the gameplay trailer feels very Witcher. Riding through a busy town on a horse with a compass and icons feels very Witchery and not at all Ass Creed.