I would like to pinpoint when Watchtower made a dramatic backward editorial change in their 31 year old Insight on the Scriptures, their flagship Bible encyclopedia.
Below, number 1 quotes the Insight book as it appeared in the original release back in June 1988.
1. “This is also illustrated by what happened to the cities of Sodom and Gomorrah and their inhabitants. Jude indicated that these cities were everlastingly destroyed. (Jude 7; compare 2Pe 2:6.) However, Jesus’ words recorded in Matthew 10:15 show that at least some of the inhabitants of Sodom and Gomorrah will receive a resurrection.” Insight on the Scriptures (Jun 17, 1988), V1, p 616, Source WT Lib 2013 [version 15.0 Build 4577]
Below, number 2 quotes the Insight book as it appears today -- well, as of a few months ago when I downloaded their WT Library from JW dot org.
2. "Thus, being consigned to Gehenna refers to utter destruction from which no resurrection is possible.—See GEHENNA.
“Sodom and Gomorrah and the cities about them . . . are placed before us as a warning example by undergoing the judicial punishment of everlasting fire.” (Jude 7) That punishment evidently applies not merely to the physical cities but to their inhabitants as well, because it was the people themselves who committed the gross sins that led to their annihilation." Insight on the Scriptures, [Source WT Library 2017 [Version 19.0 Build 7630] V1, p 617
Number 1 is from my WT Lib 2013.
They apparently made the editorial change (from Sodomites being resurrected to Sodomites not being resurrected) between those two library releases.
I don't have WT Libs between those two.
If any of you have a tween Lib, please check to see if yours matches either of the above.
If different than the 2013 Lib, please paste the source information by clicking "Help" then "About Watchtower Library". It should look something like the following image: