This reading works incredibly well in the trailer, and the tone and ascending hysteria achieved is excellent, but I have to say that I think Holmes missed the natural meter of Kipling's poem. As I read it, Kipling was very much imitating the rhythm of the footfall of marching feet, and that's absent here.
Guessing the kid acting like a carrier at the end of the second movie allowed the virus to continue, and it is probably being intentionally spread by some sort of cult in this one.
After this much time we once again reach the point where the remaining humans become the scarier threat instead of the actual zombies.
Edit: If the cult is even human? Weren't there signs that the zombies had some form of intelligence? What if they sort of create their own primitive tribal death cult-ure...
28 Millennia later and the Old Night falls across Terra. The codex describes humanity's descent into warring factions. But there is a reason they called it the Old Night, an ancient rage virus re-emerged to decimate Terran civilization until The Emperor emerged to vanquish the old nemesis using his psychic and scientific powers once and for all.
On the upside it doesn't give away any direct plot points, but does have some hints, and some of the visuals might be better to go into blind if you prefer that kind of thing. One of the better trailers for sure, and I'm stoked for the movie.