I'm pretty sure that it is, considering it was mentioned in one of the interviews, I can't remember which though...
OI you puny humie git! weze orks don't need no humie 'elp weze be out numbering everyrace in the galaxy, and may even outnumber them "hungry insects". you humie seems teh forget, us orkz as old as them Panzie Eldar. The only thing we might need 'elp on is our orkdom unifying under one Warboss's flag. Then we orkz can truly have a propa WWWAAAGGGHHHHH!!!!!!!
( Ork where designed by " The old one " as a cheap very destructive powerfull soldier for fighting the Necron, i don't remember a battle with Ork and Necron in the same side, but, well, the kinda degenerated, you know, before we used psychic weapon and the word for firing it was " daka " yes, we weren't that stupid before, but after the [ insert why the old one disapear ] everything change, but we still born in spore hided deep into the ground ) Oy me no liek chaos boy', laugh strange and the purple one luuk fancy, me liek teh griin one smell liek ol' gritchin pie !
Dun lettum fool ya, boyz! Dey'z jus 'ere fa da pickins! Dem humies wit shiny gitz, dem oo fink dat Empy humie'z dere god, dey'll be a good fight! An' we dun need no spiky gitz ta help us out! We'z the Orkz, and we'z all we needz!
In the Emperor's name... All xenos and heretics shall be burnt by holy promethium... All shall be of ash and cinder...