VERY EXCITING! Sigma is getting it absolutely right, this is my favorite Zoom range for pro work, currently only Canon offers one that can be used wide open at any focal length without worries, Nikon’s 24-120mm f4 G offers an even better range, however, I found the corner performance a little disappointing. If Sigma manages to produce a zoom at the same quality level as the fantastic ART 35mm f1.4, they will be soon the new #1 lens manufacturer for affordable top notch glass! This lens will be available in
SIGMA / NIKON (D)* / SONY (D)* / CANON mounts. WOW!
more screen grabs and links after the break

Here is the link to SAR where I saw it first and here is the link to Sigma, I am stoked

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