Hello and welcome Skinnedsheep.
For me it was 1914/607 that opened the floodgates. This got me researching the Organizations history and it became very clear that "the truth" was a steaming pile of crap. I think researching 1914 is responsible for many waking up.
Many who served as elders, got to see that the holy spirit has little to do with the decisions and direction of this organization.
I don't think the latest new light will be directly responsible for waking up many JWs, although it may add another doubt in the mind of some, which could be enough to get them researching thier beliefs and the history of thier religion. "The Truth" does not hold up very well to scrutiny.