The Sigma dp2 Quattro should arrive in my hands by early next week. See preliminary coverage of Sigma dp2 Quattro in Guide to Mirrorless as well as the extensive coverage of the existing Sigma DP Merrill lineup.
This is an exciting camera to me; its sensor holds promise for eclipsing the detail possible with even 22 megapixel DSLRs. Might it emphatically surpass DSLRs like the Canon 5D Mark III?
It might even approach the Nikon D800E in real detail. I expect improved image quality and longer battery life over the DP Merrill series.
Search for past blog coverage of the Sigma DP Merrill line.