While "Novelverse" is a perfect term for us to use in describing the past decades of Trek novel continuity, and to the people living inside it it's "Prime universe", I'm curious what would be a good in-universe name for it from a perspective outside that timeline? The Okudas coined "Kelvin timeline" for the events of the reboot movie continuity, owing to the divergence point more or less being the Narada's attack on the USS Kelvin in 2233. It works pretty well as an in-universe name from the perspective of the Encyclopedia writers.
I've heard it referred to as the "Destiny timeline" before, but that takes it's name from the novel trilogy and thus wouldn't work as an in-universe name. "Borg Incursion timeline"? "Janeway timeline" (owing to it being the only timeline with a surviving Kathryn Janeway, as per The Eternal Tide)? "Avatar timeline" (ties into the start of the DS9 relaunch in name and the Avatar itself which IRL at least is unique to the novels' version of post-DS9 continuity)?
I've heard it referred to as the "Destiny timeline" before, but that takes it's name from the novel trilogy and thus wouldn't work as an in-universe name. "Borg Incursion timeline"? "Janeway timeline" (owing to it being the only timeline with a surviving Kathryn Janeway, as per The Eternal Tide)? "Avatar timeline" (ties into the start of the DS9 relaunch in name and the Avatar itself which IRL at least is unique to the novels' version of post-DS9 continuity)?