Earlier this week I was made aware that Samyang had removed all RF lenses from their website. The responses from Samyang representatives on social media were ambiguous at best.
However, a more direct response was given to a DPReview forum member on the matter.
The reasons behind this are not yet known, but it should be noted that RF mount lenses still appear on the Rokinon website. Rokinon is a brand owned by Samyang Optics. This could just be a shift in branding and cost reduction, or it could be something else.
I hope we see an official statement from Samyang in the near future.