Sigma follows up its must-have new lens announcements with a who-wants-it? debut of its first mirrorless interchangeable-lens cameras, the Sigma sd Quattro and sd Quattro H. Sigma didn't release a lot of specs for the cameras (though B&H seems to have them), so it's possible there's some buried treasure in there somewhere. But aside from the Foveon sensor and the Sigma lens mount, there doesn't seem to be anything novel or noteworthy about them. And as yet there's no price for them, and that will factor heavily in just how much even those will matter. Sigma hasn't revealed an expected ship date, either.
LIke its enthusiast compacts, Sigma's Foveon-based interchangeable-lens models are kind of odd.