Hmm, lets throw yet another log on the rumorfire. Remember Blood of Kittens Allies rumor?
Well Games Workshop just put out a Warhammer World Weekend missionpack with a last page you need to take a look at.
So, interesting allies chart isn’t it? It also has the exact detail about Tyranids having no allies available that BoK mentioned. That isn’t a coincidence. Next notice the pack is for June-July 2012, exactly then 6th is said to ship out.
~I’ll let you all figure out what this means.