Zeiss has recently introduced two new prime lenses. The Zeiss Touit lenses are available in 12mm F/2.8 and 32mm with F/1.8 complete with Auto Focus support on cameras such as the Fuji's X Mount and Sony E Mount (NEX) cameras. Pricing starts at $900-$1250 US (found here).
Zeiss Touit 12mm F/2.8 and 32mm F/1.8 Sony E Fuji X Mount Prime Lenses
If you're looking for more affordable Prime Lenses for Sony E Mount cameras with Auto Focus, don't forget about the Sigma options. Sigma offers 19mm, 30mm, and 60mm prime lenses with max apertures of F/2.8 for the NEX camera system. No kidding when I say more affordable, in fact you can still get a bundle deal for both a 19mm and 30mm F/2.8 lens for just $199 (here)
Right now there is a Sigma Lens deal which includes the 19mm F/2.8 and 30mm F/2.8 prime lenses bundled into one discount price. You can choose either a set for Sony E Mount cameras, or the set for Micro Four Thirds cameras. I have the 30mm on my Sony NEX7 and really enjoy this lens. I may have to get a set for the new GH3 at these prices.
[Update] These sold out quick and the listing shows a Back-ordered status, but I have just verified with B&H you can still place an order if you want to take advantage of these prices and it will ship when it is back in stock. Click through the links below for the deal.