They are showing vastly improved balance and hand control. The critical thing is like the FSD (full self driving ) for cars, all of the training is all neural nets and video in and capabilities out.
Dr. Scott Walter has cofounded 2 robotics companies. He goes in depth about the business model for Tesla's Optimus humanoid robot. He shares his calculations for the value of the bots and comparing the costs of the bots to total cost of labor. What happens if the bot can do one shift, two shifts or even 3 shifts? He will review what he calls the SCOTT Bot model. Saved Costs of Teslabot Transition.