According to SonyAlphaRumors, Sony is going to unveil a new prime lens in late February – the FE 20mm f/1.8 G.
There isn’t too much information regarding this lens at the moment, except that it should be announced around February 25, and that it’s going to be about the same size as the FE 35mm f/1.8 G lens. For the sake of comparison, the 35mm f/1.8 lens is 2.87 inches (73 mm) long and weighs 9.9 oz (281 grams). It would certainly be amazing if Sony managed to keep the new lens this small!
No information regarding the price and release date is known at the moment.