Alright, maybe that last one doesn't quite adhere to the formula, but according to Kotaku, an MS New Zealand promotion for the upcoming release of Halo Wars -- buy a 360, get a free copy of the game! -- explicitly excluded "the Red Xbox 360 Elite console which is exclusive to EB games." You know, that one that hasn't been announced, and that certainly won't be announced "at this time."
Though mention of the system has been stricken from the online version of the press release, we'd be immensely disappointed if the system, whether tied to Resident Evil 5 or not, failed to make an appearance. We can't let all these Red Rig of Death jokes go to waste!
Source -- Red Xbox 360 Mentioned Officially by Microsoft
Source -- MS quiet on red Xbox 360 rumors
Source -- Halo Wars Promotion