Ok, feel free to roll out some hefty barrels of salt for this one, especially given that it's on the THQ Space Marine forums, but here's [URL="http://www.spacemarine.com/gb/forums/topic/1292"]a repost of a reply asking about the missing Primarchs[/URL]:
I'd not heard this, I've not seen Dan post anything regarding it, so I'm not one to believe it outright, though I'd certainly like it to be true..Are you referring to the two "mystery" Space Marine legions that "dissapeared"?
Well, if it means anything, Games Workshop have given Dan Abnett the green light to write about them.
I'm still certain one of them was the Rainbow Marines, and that Games Workshop brushed them under the carpet out of embarassment ;P
Could be something, could be nothing, but then again, I'd feel it's more of a disservice to leave it as a mystery than giving us something proper.
After all, the "you can make up your own Legion fluff" is something that nobody would do for risk of being laughed out of their FLGS.
Chapters fine, Legions, no..
Thoughts?