Do you want it good, or do you want it Wednesday? We’re not entirely qualified to comment on this, since our knowledge of DC continuity post-Crisis I is spotty at best, but here goes:
One of the big issues in the recent Marvel Civil War controversy was the eternal “Good or Wednesday debate. Editor Tom Brevoort argued that the book would live on in its most complete form in the collected edition and keeping lagging art boy Steve McNiven on the book rather than calling in a substitute legion of artists would make the ultimate collection a better book. (We felt that Brevoort was making the right call because, despite all the protests. there is no way any Marvel Zombies would stop buying the book.)
Now, the example of the “Wednesday” side of the equation most people chose to hold up was the pamphlet publication of INFINITE CRISIS, which called in that substitute legion, and was so rushed for its finale that the collected edition indeed contains a host of differences and fixes. Like we said, we can’t keep up with the ins and outs of DC continuity, so we’ll let Comics Should Be Good! and Blog@ do the heavy lifting.
CBR has several panel-by-panel breakdowns of the changes between the periodical and collected versions, with tons of minor art and text changes. Graeme at Newsarama has a more in-depth look at a single change that seems to affect millions of souls drifting between Earth 2 and Acheron…or something.
It also seems George Perez redrew the final two page spread (we’re just linking to small versions of the original scans, hoep this isn’t a no-no.)