You should've gotten it by now if you ordered it. I got my copy off a store shelf, so it's definitely out.
Even before you get the codex, you might want to pick up a Weirdboy... or two... they're going to pretty much become a staple of every Ork army, I think. For 85 points (which is a fully upgraded one, by the way), you get a psyker who's ultimately a better psyker than a Space Marine Librarian. As long as you've got him in a mob of 30 Boyz, he's not going to have much trouble passing psychic tests, either.