It is the project used do create the demo from what I understand... the City.
It is just not the demo... I mean the events they did in the Demo is not present in the project shared yesterday.
Edit.
I found the official description.
"This downloadable project reveals how the city scene from The Matrix Awakens: An Unreal Engine 5 Experience was built and demonstrates how we used Unreal Engine 5 to bring it to life."
"The City Sample is a free downloadable sample project that reveals how the city scene from
The Matrix Awakens: An Unreal Engine 5 Experience was built. It consists of a city, complete with buildings, vehicles, and crowds of MetaHuman characters. The project demonstrates how we used new and improved systems in Unreal Engine 5—including World Partition, Nanite, Lumen, Chaos, Rule Processor, Mass AI, Niagara, MetaHumans, MetaSounds, and Temporal Super Resolution—to create the experience.
Designers and developers alike can use this playground to explore how to use Unreal Engine 5 to create expansive and engaging environments."