Australian company "Fastbrick Robotics" developed a robotic truck system that can lay 225 bricks per hour. It's a big 3d printer on wheels that uses robotic crane to build houses.
It is not cement paste extrusion that can be found in other building 3d printers, but it is additive, digital and making BIG 3d objects.
Personally, I'm not even sure that cement paste extrusion is the best way to get commercially viable construction machine for industry wide adoption and application as a standard house building tool.
People like brick.
Here is an interesting video presentation:
It still needs some human assistance, so some jobs in construction field will be saved. Some. Few. For some time.