As already rumored before, Sony will announce two new fast prime GM lenses in late this year to early next year. According to latest rumors, one lens will be Sony FE 16mm f/1.8 GM lens. This lens will be world’s fastest 16mm lens.
Sony FE 16mm f/1.8 GM lens will be “about the same size and build quality” as the FE 24mm f/1.4 GM lens, so expect a large, well-built lens with lots of glass and a hefty price tag. Stay tuned for more info.