This is an odd one as it looks Tyranid but look at what was captioned with the image.
"Unspeakable horror or a vision of beauty? The Rumour Engine could send us either, or both at once. Dare you test your sanity and find out? Of course you dare…"
"Sometimes the Rumour Engine goes many years without making one of its portentous predictions, but due to its existence outside the regular flow of time and space, they always manage to arrive with us on a curiously Earth-weekly schedule. Does this mean that it was, perhaps, the invention of more advanced future humans? We really don’t know… "