The Voigtlander Color Skopar SL II 28mm F2.8 manual focus prime lens for Nikon and Canon mounts was just announced by Cosina.
Although they haven't released the US prices yet, expect to pay €549 for the Canon version and €529 for Nikon, which includes an AIS chip to allow use of all metering modes.

Here are some detailed specs just released by the company:

• Focal Length: 28mm
  
• Aperture Ratio: 1:2.8
  
• Lens Construction: 6 groups, 7 elements
  
• Picture Angle: 74.8°
  
• Aperture Blades: 9
  
• Nearest Distance: 0,22m
  
• Macro: 1:5
  
• Diameter: 63.3mm Nikon AI-S, 70.0mm Canon EOS
  
• Length: 24.5mm Nikon AI-S, 27.0mm Canon EOS
  
• Weight: 180g Nikon AI-S, 230g Canon EOS
  
• Filter Size: 52 mm

does this lens have half-stop aperture clicks?