It's all groundbreaking and trailblazing in the context and detail they are achieving. If it wasn't nothing special the Gamescom Demo wouldn't have generated so much hype.
It was a showcase of multiple techs working seamlessly in a highly detailed environment, and the scary part is that it's just the beginning, as they work on it it will only get better and better, what we saw was just V1, V2 is already in the works to showcase at Citizencon and I'm sure they will keep improving it as they go! Early days...good days.