Sony FE 16-35mm f/4 and 28-135mm f/4 Lenses
Sony have revealed that the FE 16-35mm f/4 ZA OSS and FE PZ 28-135mm f/4 G OSS power-zoom will be the next lenses released for their full-frame mirrorless camera range. The FE 16-35mm will be a new ultra-wide-angle lens developed with Carl Zeiss, and will feature a constant aperture of f/4 throughout the ultra-wide-angle zoom range. The FE 28-135mm f/4 will be a new power-zoom lens developed primarily for shooting video. Both lenses are expected to be released in the summer of 2014. The exact release dates and pricing have yet to be announced.
Thanks to Photoscala for use of the roadmap image.