Sorry, I might have worded it poorly. I meant it more in the sense of: aspects that were originally expected to stay a bit longer in incubation/preview due to feedback that still end up in the LTS version (since like Vasily mentioned only LTS get exams, on that front ) since some features are quite extensive scope wise, and it's quite a weighty book already literally and figuratively. Also with the shift from 3 => 2 years for LTS.
When do you generally actually start on the preparation for the next LTS exam guide, given I can imagine it's quite an extensive process given the scope of the material.