SonyAlphaBlog tested the new Samyang 35mm f/1.4 FE lens and concluded:
The Samyang 35mm f1.4 AF Prima (600 euros) is an upgraded version from the Samyang 35mm F1.4 AF II (700 euros). it is cheaper, lighter, more compact, a bit sharper but has downgraded ergonomics
Overall image quality is very good to excellent (on 33Mpix sensor) , color rendering, bokeh, background blur are very good. Improvement points are the sharpness wide open on 61Mpix, level of CA , Resistance to flare , Vignetting
And this is Artur’s review of the lens: