Sigma's mirrorless camera spotted, announcement coming later today? (Update: just a mod)

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Is Sigma announcing an EVIL (as in Electronic Viewfinder
Interchangeable Lens, not malevolent) camera today? Digital
Photography Review forum member Ryan Shine seems to think so, and says
it's "here" in China. As if to prove his point, we've got a trio of
pictures for the mirrorless shooter. Hey, don't say we didn't warn you
-- and if it doesn't become official soon, at least there's pictures
to enjoy.

Update: We tracked down the source and turns out this is just an
enthusiast's modded Sigma DP1, which has been given a Leica M mount.
Quite a daring mod, if we may say so.