I think he’s wanting to know what the difference is in quality between 2.5 and 2.7 of Despecialized in general.
Here’s the thread about v2.7, which started as towne32’s personal color correction of v2.5 and grew into an official DEED release.
From his first post (paragraph 1 is from when it was just 2.5 with color tweaks; paragraph 2 is from when he made additional changes and he called it 2.6; paragraph 3 is about the current version, 2.7, for which Harmy provided him with the original source files):
…this is a color adjusted version of Harmy’s Star Wars Despecialized 2.5. … Harmy took a unique take on the color timing. Because he had access to frames of a scanned IB Technicolor print, he based the 2.5 coloring on that. Harmy did an amazing job matching those scans. Some of the big differences in color could have only made his job more difficult, and his product looks like Technicolor scans. … Harmy was not aware at the time that his scans had not yet been corrected to match the way the print looks when projected. … The goal is just to make a more consistent version color wise that, for me, is ideal for watching in a trilogy with Harmy’s other two releases.
This is now available as Star Wars Despecialized 2.6 as AVCHD, MKV, and BD iso with alternate crawl options. MKV format releases have a fixed Castilian audio track as well as Russian, Ukranian, Thai, and Navajo dubs (in addition to the tracks in 2.5). Replaced some shots using TN1’s Silver Screen Edition, mostly for purely GOUT based shots like Luke heading to his X-wing. I did some extra manual and automatic cleanup and stabilization, and did my best to match the color, contrast, grain, and sharpness to surrounding shots.
Despecialized 2.7 builds off of 2.6 with additional color changes, mostly removing some green from the desert and Death Star. Additionally, the “A Long Time Ago” card is a cleaned up version from the Silver Screen Edition (SSE). It also features Catbus’s excellent Greedo subtitles that were derived from the SSE, and Darth Lucas rotoscoped the lightsaber blade in Ben’s hut from the SSE. This version has better video quality as I used Harmy’s lossless encodings. It features a Hindi track and Project Threepio v9.2 subtitles.