Where do I find this Warhammer
40k Stamp? And what does it look like? For instance;
http://www.forgeworld.co.uk/Downloads/Product/PDF/t/Tauupdate.pdf
Says Tau items released in the passed (ie rules in the Taros campaign book and such), but where do I find the stamp of approval?
(EDIT)
Erm, I just found out, I'm an idiot, however...what would you guys think about the Sky-ray rules in the book being used in standard play? It's a bit more expensive than the one in the Tau Codex, but they gain the ability to shoot at fliers.