I have nothing to add to the news floating over the internet. It looks like Tyranids is coming soon. And I wand just to write something about it.
Release date is rumored to be 11 of January 2014 - soon enough. Pre-order is rumored to start at January 4. Three weeks left:)
I found a possible codex cover:
Looks great! It must be a hardcover book, I think. I'll try to go through the codex, gathering all the last rumors together: