I just saw a link to an interview on Imaging Resource with Sigma regarding the 50 mm f/1.4 Art over on CR. Sigma apparently told IR that they are confident in beating all Nikon and Canon offerings and are instead gunning for the Zeiss Otus.
I never expected to see it, but I assume this is the equivalent to trash talk between photographic companies. I am assuming they ended the statement with a "yo' mama," but that didn't get reported.
Anyway, if the Sigma 50 Art at f/1.4 bests the Canon 50 f/1.4 (my current 50 mm prime) at f/2, I'll happily pay the premium to get the lens. While I haven't seen prices yet, I am assuming it comes in around the $899 that the 35 mm Art did. If they come anywhere close to the Otus, I will be shocked....and buying the lens.
I am more hoping that Sigma releases a 20 mm f/~2 or 24 mm f/1.4 lens with similar optics to the 35 Art. If they do that, I may be buying a collection of Sigma primes.