Airpods Pro 2 (Lighting) to USB-C Case Availability

I own a pair of AirPods 2 Pro (Lighting), and I am pretty happy with them. With the recent announcement of the 17 series iPhones, I was considering buying one to replace my iPhone 12. With my current AirPods and iPhone being Lightning, I would like to have my AirPods case use USB-C if I were to get a USB-C iPhone. I was aware of a replacement case you could buy on the Apple Store page. When I went to check it out, I reached a 404 Page Not Found. I'm aware that Apple was selling them as of three weeks ago, according to the Internet Archive. I'm wondering if I can still buy one; if not, could I go order a USB-C Case part to replace it? I was told by Apple Support that it was "yet to be available" and to check an authorized reseller, and the only thing I can find is non-Apple genuine cases