it's more enhanced than I expected -- models are higher poly, there is animation interpolation, they added splitscreen....

There's one screenshot where they have a dynamic shadow casting light from a muzzle flash. 

I also wonder about what technical changes they made. The models look high-poly enough I wonder if they changed the model format, or switched to a skeletal format for models and animations?

Also wonder if the netcode changed at all, are they still using the old protocol 15? Did they combine quakeworld enhancements into a single new protocol?