>>211774955
I wouldn't say it retcons days and weeks, it's dismissive of the latter by quickly mentioning that the infection got contained to britain, so really only the very last scene of weeks can be ignored.
but more in general about this movie, it totally feels more like a script inspired by days than a direct sequel, the setting, the characters and even the zombies are very different, this is its own thing and will have to be analyzed only until this new trilogy gets completed.

>>211754246
there are three variants shown in the movie
>crawlers
who survive from eating small animals and bugs, they're slow disgusting blobs.
>fast zombies
They're all skinny and frail looking.
>alphas
Tough motherfuckers who love to rip spines, tank a lot of damage, command fast zombies and one of them at least was shown 'controlling' a murder of crows. Also they have huge cocks.