The Blackmagic URSA was designed to be the beastly cinema camera that everyone wanted the 2.5K and 4K Blackmagic cameras to be.
After rigging them out for higher end productions, the other BMCC cameras became larger than the URSA.
As a result, Blackmagic took the key wishlist items and packaged them into a full size production camera with little compromise.
Notably, the body and components are built to be upgraded.
While the URSA is currently configured with a 4K sensor capable of delivering 60fps, the rest of the camera can handle up to an 8K sensor at 30fps.