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Rokinon Xeen lenses

These Rokinon lenses especially designed for film-making. This is why there is a thread on the lens barrell. These lenses has a bright T1.5 aperture (Transmission value this is used in cinema instead of f-stops). The lenses has a very solid built from metal, internal focusing, but no electrical coupling with the camera, means no lens data like aperture in Exif and only manual focusing is available.

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Available mounts

These lenses are available in the following mounts:
Canon EF, Nikon F, Sony E, Micro 4/3, PL (usual cinema mount)

The following three lenses are available at the moment (three other are perhaps coming in the future, a wider angle and two longer lenses):

The question is do these lenses different than the Samyang photographic or Cine Ds lenses ?
As I understand these lenses have different coatings but optically identical.