In 2024, after Kore Soong hacked into her father's computer systems and deleted almost all his work, one of the few pieces of work left was a confidentialfunding report for Project Khan from 1996. As a result, Soong appeared to take a renewed interest in the Project. (PIC: "Farewell")
According to the show runners, Spock was wrong and that the Eugenics Wars actually happened much later during the 21st century. Terry Matalas: "We discussed endlessly. We came to the conclusion that in WW3 there were several EMP bursts that kicked everyone back decades. Records of that 75 year period, the 90s on were sketchy. Maybe Spock was wrong? No easy way to do it if you want the past to look and feel like today." In response to Khan's own references to the 1996 date, that they simply have been ignored to make the series more relatable to the present; " Maybe because in 1967 they didn't anticipate the show still going for another 6 decades." Aaron J. Waltke added: "There's also the ripples of the Temporal Cold War shifting the Prime Timeline in Enterprise — at least until the Temporal Accords put an end to that wibbly wobbliness." [1]