Yongnuo has announced a new YN35mm F2S DF DSM lens for full-frame Sony E Mount cameras. It appears to not just be their existing 35mm f/2 for DSLRs with an extended barrel, either, but a completely new lens design. Whether or not it’s their own design or they’ve “borrowed” somebody else’s, I don’t know, but this one does seem as if it may be designed specifically for mirrorless cameras.
The lens is constructed of 9 elements in 8 groups including one aspherical element and one low dispersion element. The elements have a Nano-multilayer coating which Yongnuo says helps to improve light transmittance while suppressing ghosting and flare.