In a recent interview with Focus-numerique, the head of product planning at Samyang Jeong Min Shin said that they will start making autofocus lenses for Nikon mount (this rumor has been circulating for a while):
We started the implementation of an autofocus optical FE frame and we are adapting to of other mounts, like Canon and Nikon. We also believe in Fujifilm and Micro 4/3, but these markets are not very important
Via Fujiaddict, Photorumors, picture credit: Samyang