That's terribly sad news. I was hoping to see one last special Batman project from him. Jim Aparo, to me, was the quintessential Batman artist. His versions of all the characters (Most notably Bruce Wayne and Two-Face), are what I consider to be the measuring stick for how they're drawn by others. Hell, he was able to make Nightwing look cool in his original costume, regardless of how ugly the thing was.
You'll be missed, Mr. Aparo. God Bless, and thanks for the fantastic imagery.
"There is an idea of a Patrick Bateman; some kind of abstraction. But there is no real me; only an entity, something illusory. And though I can hide my cold gaze, and you can shake my hand and feel flesh gripping yours and maybe you can even sense our lifestyles are probably comparable... I simply... am not... there."