Dpreview just posted the new Sony/Zeiss Distagon 24mm f/2.0 review: http://dpreview.com/lensreviews/sony_24_2_m15/.
The conlcusion? No surprise here. The Distagon delivers a superb image quality with fast silent and accurate autofocus. The only minor issue is the flare under direct sunlight.
You can preorder or order the lens at (Click on store name to visit the product page):
US: Amazon, Adorama, BHphoto and [shoplink 4419]eBay[/shoplink].
EUROPE: Amazon Deutschland, Amazon UK, Amazon France and [shoplink 4419]eBay[/shoplink].