And I would hope that new lens is really good. With a $900 price tag, I would expect it to be. I'm glad I have my old one that cost less than half the price.
$900 is a bargin for that lens. The canon and Nikon versions are around $1500. All of those lenses are full frame lenses.
Sigma also makes a 30mm 1.4 for the crop sensor cameras that is around 500 and that is a brand new version of the lens.