AirFoilLabs developer juraj.rovensky has today posted via the .org forums a total of three post. Two regarding the Vulkan/Metal compatibility issues and one regarding the GNS 530 and GTN 750 integration for the KingAir 350 for X-Plane 11.
Based on the two posts regarding the Vulkan/Metal compatibility, AirFoilLabs is currently working on solving KingAir 350 issues on X-Plane 11.50 Metal when the menu is inaccessible together with Product Manager. Also, AirFoilLabs is currently working on fixing missing sounds on the Cessna 172 with Metal. The Vulkan version has been already fixed.
GTN 750 + GNS 530
Juraj has today also shared, that the RealityXP GNS 530 and GTN 750 integration into the KingAir 350 should be released very soon. A comparison with/without can be seen below.
Just a quick News: GNS 530 and GTN 750 integration will be ready for release very soon!