It’s all guesswork, but TPM got a new scan for the BD, so it’d be odd if they did another new scan a year later for it.
There’s nothing to scan. The movie was essentially “rebuilt” directly from the digital filmout tapes in 2011 (they were still readable after more than a decade) in preparation for the blu-ray and the 3D version. That rebuilt master is what they’ll be going back to from now on to make any new transfers of the film.
Ignore my statement and replace “scan” with “master.”