Anyway... Keeping in line with the last rant about TLoS, it would seem that there's an equal amount of [expletive delete] that can't grasp the new cover saves. So again here I am posting actual rulebook excerpts to try and clear things up.
"When any part of the target model’s body (as defined previously by the LoS rules) is obscured from the point of view of the firer, the target model is in cover. This is intentionally generous, and it represents the fact that the warrior, unlike the model, will be actively trying to take cover (as well as the smoke, explosions and flying debris that are mercifully absent from our tabletop battlefields)." "If a target is partially hidden from the firer’s view by other models, it receives a 4+ cover save in the same way as if it was behind terrain."