watchOS 6 beta 2 unable to discover and connect to BR/EDR bluetooth accessories

At this recent WWDC session about CoreBluetooth it was annunced that communicating with BR/EDR devices using the CoreBluetooth framework will be supperted in watchOS 6.
I developed an accessory that support GATT over BR/EDR but the Apple Watch fails to discover it in the Bluetooth settings screen of the Apple Watch.

I coundn't find any documentation for this feature other than the WWDC session so if there are more requierement that needs to be fulfilled by the accessory - please let me know.


Any help would very apperciate 🙂
Thanks!