It's actually a rather troubling development in the medium format world. Hasselblad has broken with tradition and now requires that buyers of their camera also use their sensor. In the 35mm based DSLR world, that's normal. In the medium format world, the camera and the sensor are purchased separately and there is strong and healthy competition for sensors. Hasselblad seeks to end that by locking out sensor competitors from working with their cameras.
They also putting some weird spin with this "First 48mm
Full-Frame" nonsense. That's like make a sensor smaller than 35mm film and calling it the "First 30mm Full-Frame." This sensor is the same size as their previous 39MP and their competitor's; it's still not full 645.
The MF world is in trouble and this may just be what Hasselblad's thinks it needs to do to survive. Still, it's a troubling development.