Apple has not made any improvements to the repairability of its latest iPad Pros compared to their predecessors. It has added a LIDAR sensor though, and iFixit has revealed how it works. Sadly, it is not as accurate as FaceID and the TrueDepth cameras found in modern iPhones.
https://www.notebookcheck.net/Apple-iPad-Pro-2020-iFixit-teardown-demonstrates-sparser-LIDAR-scanning-compared-to-Apple-s-FaceID-sensor.459426.0.html