timdiggerm said:

However, Lowry Digital originally created either 4k2k or 8k4k masters at the time (my memory is a little vague) not 1080p ones.

Is that news for us? I forget.

News to me. Last I heard was this:

“We’d done a lot of work on the films prior to going to John [Lowry],” he [Jim Ward, Vice President of Marketing and Distribution for Lucasfilm and Executive Producer of the collection] says, “re-mastering them in high-def, down-converting them into standard def, and re-color timing them. We actually took a cleaning pass through Industrial Light and Magic, as well, but then ultimately took them down to John to make them pristine.”

So according to the only article about the restoration, it doesn't even sound like they cleaned it in 1080p, but 480p (which is crazy).

BUT later in the article:

To clean the films Lowry pushed high-definition scans of the original negatives provided by LucasFilm through his proprietary software running on 600 dual-processor Power Mac G5 computers, each with Mac OS X, 4 gigs of RAM and connected via gigabit Ethernet to a 378-terabyte storage array.

So they did clean up the 1080p files provided by LFL.

Everything is fiction, nothing is true.