CatBus said:

Film was used for the Star Wars credits even though we'd already made a very good reconstruction. I'd say if he has the film elements, he'll use them, and stability/cleanup will be less of an issue for ROTJ than it was for SW. I think the only reason we have a reconstruction for ESB is because the timing just didn't work out right for getting the film elements.

Indeed, film scans of the ESB credits weren't available in time for ESB V2.0, but I believe Harmy said he has scans now for future use on ESB. I assume, if available, he'll go with real film elements on RotJ credits over a reconstruction, as well. As nice as the reconstruction credits can turn out, you can't really beat the authenticity of the original credits (I think the reconstruction for ESB was a last resort, at the time).

Still, it is sort of fun seeing how anal everyone can get when proofing reconstruction credits.