Ann: FBR General Meeting Presentation, page-105

There are three parts of the robot that are needed in the sequence of actually laying a brick, the depalletizing bot that unpacks the bricks, the boom delivery conveyor, and the end effector (laying head). the first two need to be very durable, but the last one is the most important. The end effector for Hadrian x is where all the tech is at, from a hardware perspective, the laying head manages the DST. It takes in external correction signals from the remote tower and has the electrical motor/ linear actuators to dynamically adjust for any error. It also appears to have a measurement apparatus to measure each block. It manages the application of the adhesive and finally manages the orientation of the block during the laying process.

It would be the most likely candidate to be the bottleneck for increasing laying speed. So if you see something new, it'll be on the laying head or in the software that controls the laying head.