I hope this is all leading to something good
I haven't read IC 5 yet, but my suspicion is this:
One year later will be, in itself, great. The preview of the first Busiek/Johns issue looked really good.
IC is not worth the time or money. It's a twisted and evil blood-bath, just ignore it. Better yet, ignore
Crisis on Infinite Earths, ignore everything from Andy Helfer/Byrne/Wolfman through Dan Jurgens, Mike Carlin, and Eddie Berganza (who meant well but was under the Carlin thumb) -
then ignore
Infinite Crisis.
Just start straight from
One Year Later, we don't need the "explanation" for why the Iron-Age continuity will be changing, such a concern is not worth knowing about.