I saw this news elsewhere, and am saddened by it. "My" Len Wein was a DC editor in the mid-80s. The Batbooks under his tenure were really good. He also edited Crisis on Infinite Earths, and wrote/edited Green Lantern. The first 2 letters I ever wrote to a comic editor were written to Len - because he seemed like a friend I simply hadn't met yet.
I've drifted away from comics themselves over the last 10 years, but I have happy memories of his stories, and great respect for his work and style.