User blog comment:Commdor/Rumor: ME3 "Rebellion" Multiplayer DLC Incoming/@comment-4310096-20120502175642/@comment-1221773-20120504213941

Prothean would go with it, too, "Phoenix" and "From Ashes" are a similar theme. It would also be easier for the devs to go with Prothean characters because the character models already exist, whereas the raloi would need to be designed from scratch.

But the "Phoenix" bit is what gets to me about the whole rumor. If this were absolutely fake, why wouldn't the guy(s) who thought it up just say the characters are Prothean or humans in Phoenix Armor or whatever? "Phoenix" smells like a marketing ploy to keep the characters' race a secret until the pack is released.