Apple will clearly show second generation AirPods Professional on September 7th. This was declared by journalist Mark Gurman on the mailing checklist Bloomberg turned on.
The reporter did not specify when the headphones will be available for pre-get and will go on sale.
The new AirPods Pro really should receive an updated H2 chip with far better sound good quality as nicely Bluetooth LE audio support. The charging scenario can be Exploration by means of the software Locator. [Bloomberg]