Word on the grapevine now indicates that the upcoming Apple AirPods Pro 2 is likely to remain equipped with Lightning charging, instead of USB-C. In addition, production of the premium earbuds is set to begin shortly, with Apple to move most of its production to Vietnam.
https://www.notebookcheck.net/AirPods-Pro-2-USB-C-unlikely-for-Apple-s-upcoming-premium-earbuds-as-production-details-surface.621866.0.html