Z15-GH3 Compatibility with GH4?

[acall]

I'm wondering if anyone knows whether the Zenmuse Z15-GH3 gimbal is compatible with the new Panasonic GH4 camera? I'm assuming as long as it's the same dimensions and weight it would work.

I've seen a couple videos online of aerial footage shot with the GH4, but I can't figure out what gimbal was used in them.

Thanks for any help