The newly announced Sigma lenses for the NEX system will start shipping in April. The 30mm lens release is scheduled for April 6 and the 19mm for April 13. Dpreview (Click here) posted some image samples of the 30mm Sigma on the NEX-7. And also the German Mittenkontakt (Click here) posted images with the exact same camera-lens combination.
The 30mm Sigma lens is in Stock on [shoplink 11967 ebay]eBay UK (Click here)[/shoplink] and Amazon Germany (Click here). USA readers can preorder the lens at BHphoto (Click here).
Source: Sigma Japan.