Rokinon published the page for the Samyang AF 45mm F1.8 FE today here but pulled it down already. Below are the specs:
Model: IO45AF-E
MSRP: $399
UPC: 0-84438-76619-6
Focal Length: 45mm
Maximum Aperture: F1.8
Coverage: Full Frame (FX)
Optical Construction: 7 Glass Elements in 6 Groups
Aperture Range: F1.8 – 22
Diaphragm Blades: 9
Coating: Ultra Multi-Coating (UMC)
Minimum Focusing Distance: 17.7″ (0.45m)
Filter Size: 49mm
Lens Hood: Removable
Maximum Diameter: 2.43” (61.8mm)
Weight: 5.71oz (162g)
Length: 2.2″ (56.1mm)