https://www.cnet.com/news/as-new-airpods-2-clues-appear-xiaomi-airdots-enter-the-game/

Class 10: General wellness instruments, namely, health, fitness, exercise, and wellness sensors, monitors, speakers and displays for measuring, displaying, tracking, reporting, monitoring, storing, and transmitting biometric data, heart rate, body movement, and calories burned.

Of course, it might also be wishful thinking: there was a some disappointment when Apple didn't announce the successor to its wireless earbuds in conjunction with its iPhones in September or hardware in October.