The Sony FE 28mm F/2 (B&H Photo) is the first wide angle fast lens for use with Sony's full frame 'E' system, formerly called NEX that used only APS-C sized sensors.
This is a hobbyist grade lens as far as build quality is concerned, and is missing OSS, or Optical Steady Shot, so you'll need a camera body with sensor based image stabilization if you're shaky like me and need help at slow shutter speeds. The good news is the optics appear to be first rate, which is the most important quality in my opinion, and what we really want, right?
Funny side note; Sony's US website lists the focal length in inches, so it's a 1-1/8" lens, and I don't know about you, but I can't wait for that new 3-1/2" portrait lens! Apparently they figure the metric system is on the way out.