Not sure what's going on a Steidl, but it seems like the floodgates have opened and they're releasing a new book almost daily.
I see that they've just released a new William Eggleston book entitled
Mystery of the Ordinary. It contains some of Eggleston's early B&W work which I think is interesting (I'm still kicking myself for not buying a copy of
Before Color when I had the chance at a reasonable price) but the color images look to be the same ones published in nearly every other Eggleston book. So it's a pass for me, but it could be interesting to someone who doesn't currently own any Eggleston monographs.