https://wccftech.com/airpods-pro-second-beta-firmware-4a362b-released-with-conversation-boost/

Apple has just released the second beta of AirPods Pro firmware for developers and testers with Conversation Boost.

For the first time ever Apple started seeding beta firmware for the AirPods and the company took the bold step with the AirPods Pro. And today, Apple has seeded the second beta of the firmware, bringing the version up to 4A362b, and adds the new Conversation Boost functionality.