Greg VdB: Of course this lens is not for everybody, but some people could become VERY happy with it. If the 10mm is of the same high standard as Samyang's FF lenses, this will become the must-have lens for crop-system nightsky photography. I couldn't wait and bought Sigma's 11-16mm in the meantime, but if coma and astigmatism are better corrected in the 10mm than in the 11-16, I'll probably be changing. The manual focus is no problem for a lens this wide, and the manual aperture is even an advantage for shooting timelapse series. Can't wait for the Photozone, Lenstip, and maybe David Kingham reviews!
Greg what is the Sigma 11-16 you refer to? is it an older discontinued model? I am not finding it. Did you mean 8-16?
BillGarrett: Interesting new lens. IQ would need to be amazing, though, for me to give up my Sigma 10-20mm AF zoom.
Bill is your Sigma 10-20 the F4 model?
iShootWideOpen: Ridicules size!
I had just emailed Samyang yesterday Dec 5 asking for a possible release date and they did reply saying first quarter of 2014, possibly second quarter 2014.