Either the information I posted two days ago got lost in translation or Samyang is preparing to announce another wide angle lens for mirrorless cameras. Either way, here are the detailed specifications for the Samyang 10mm f/2.8 lens:
Model: Samyang 1:2.8 10mm ED AS UMC CS lens
Aperture range: f/2.8 ~ 22
Optical construction: 14 element in 10 groups (2 aspherical elements)
Angle of view: 109.5˚(APS-C)
Minimum focusing distance: 0.25m (0.82ft)
Filter size: none
Length: 76.7 ~ 105.5 mm
Maximum diameter: Ф86mm
Weight: 710 ~ 740g
Mounts: Canon EOS, Canon M, Nikon, Pentax, Sony, Sony-E, FUJIFILM X, Samsung NX, Four-thirds, Micro Four Thrids