Question about Seasonic VERTEX GX-1200, 80+ Gold

What is the difference between this unit and https://www.digitec.ch/en/s1/product/seasonic-power-supply-seasonic-1200w-vertex-gx-1200-modular-80gold-power-supply-pc-23565830 Also, do you know when you might carry the platinum certified PSUs? i.e. vertex-px-1200