Billy Chan just received this mail from sigma about SD1 availability.
Dear Mr. Chan,
There is no influence of earthquake on any Sigma product, including SD1. Project is running as already scheduled. Regarding the availably time, countdown clock has started ticking. Due to confidentiality concerns I cannot provide further information regarding availability time of SD1.
Please keep checking it from the closest Sigma representative in your country. http://www.sigma-photo.co.jp/english/network/index.htm