Sigma is actively working on two new FE lenses for Sony E mount mirrorless cameras. The first one will be a Sigma 35mm f/1.4 (or f/1.2) FE autofocus lens. And this upcoming Sigma FE 35mm fast prime lens is expected to be announced this Summer!
The size of this new Sigma FE 35mm lens will be somewhere in between the current Zeiss 35mm f/1.4 and the Zeiss 35mm f/2.8. Sigma is also rumored to announce a new FE zoom lens, probably FE 24-105mm f/4.
The price of Sigma FE lenses are expected to be much cheaper than the Sony/Zeiss FE lenses. Stay tuned for more info.