Yup, it does indeed appear they’re running one of these for each movie ahead of the release.

Maybe they’ll cover audio changes sometime in the future (if they ever fix the mistakes they made on the 'o4 editions…)

Mod Edit: Unfortunately the website linked to above is no longer around. However…

StarWars•com Official 2004 Changes Preservation : SW : ESB : ROTJ - re-uploaded & compiled by doubleofive

The Internet Archive’s WayBack Machine has working functioning links for the site re the 1997 SE changes, here:-