Validation Layers says: MoltenVK version 1.2.11, supporting Vulkan version 1.2.296.

[ymozer]

As you can see at title Validation Layers reports that "MoltenVK version 1.2.11, supporting Vulkan version 1.2.296" on Vulkan SDK version 1.3.296.0.
Is it normal to validation layers to report this way?

[billhollings]

Yes. That's normal.

MoltenVK's versioning is different than the Vulkan SDK.

The SDK release schedule and versioning system is handled by LunarG, and they use the Vulkan version system.

MoltenVK uses the Vulkan version and a consecutively-increasing point number. This allows MoltenVK to create releases as needed, and not be tied to a particular Vulkan header version (granted that most of the recent releases have aligned with an SDK release). And MoltenVK can be linked directly to an app, without the SDK. See the Whats_New.md document in the MoltenVK distribution to see what was included in each MoltenVK release.