Sony 20mm pancake announced (also 18-200 PZ)

http://www.engadget.com/2013/01/22/sony-20mm-18-200mm-e-mount-lenses/

Okay, the 18-200 doesn't count. The 20mm is kinda interesting, although f/2.8 is disappointing. Leaves it head to head with the Sigma 19mm, which I'm sure will be the match up on everybody's minds. But at $350 for the new pancake, versus $200 for both Sigma lenses which are known to be viciously sharp? That's a tough one to see unless you're REALLY size sensitive.