The title of the article is misleading - in that this is an unreleased fan-project that will never likely see the light of day - but does illustrate what can be achieved…

‘Star Trek: Voyager gets an unofficial 4K remaster thanks to AI’:-

https://www.engadget.com/2020-03-29-star-trek-voyager-4k-unofficial-ai-remaster.html (with example video)

There was a similar sort of experimental attempt for Deep Space Nine in HD - by a talented fan last year, here…

‘Fan uses AI to remaster Star Trek: Deep Space Nine in HD’:-

https://www.engadget.com/2019-03-15-star-trek-deep-space-nine-ai-remaster.html (with example video)